^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) ===============================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) How to conserve battery power using laptop-mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) ===============================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) Document Author: Bart Samwel (bart@samwel.tk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) Date created: January 2, 2004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) Last modified: December 06, 2004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Introduction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) ------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) Laptop mode is used to minimize the time that the hard disk needs to be spun up,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) to conserve battery power on laptops. It has been reported to cause significant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) power savings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) .. Contents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Introduction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Installation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * Caveats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * The Details
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Tips & Tricks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Control script
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * ACPI integration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Monitoring tool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) Installation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) ------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) To use laptop mode, you don't need to set any kernel configuration options
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) or anything. Simply install all the files included in this document, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) laptop mode will automatically be started when you're on battery. For
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) your convenience, a tarball containing an installer can be downloaded at:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) http://www.samwel.tk/laptop_mode/laptop_mode/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) To configure laptop mode, you need to edit the configuration file, which is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) located in /etc/default/laptop-mode on Debian-based systems, or in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /etc/sysconfig/laptop-mode on other systems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) Unfortunately, automatic enabling of laptop mode does not work for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) laptops that don't have ACPI. On those laptops, you need to start laptop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) mode manually. To start laptop mode, run "laptop_mode start", and to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) stop it, run "laptop_mode stop". (Note: The laptop mode tools package now
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) has experimental support for APM, you might want to try that first.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) Caveats
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) -------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * The downside of laptop mode is that you have a chance of losing up to 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) minutes of work. If you cannot afford this, don't use it! The supplied ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) scripts automatically turn off laptop mode when the battery almost runs out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) so that you won't lose any data at the end of your battery life.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Most desktop hard drives have a very limited lifetime measured in spindown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) cycles, typically about 50.000 times (it's usually listed on the spec sheet).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) Check your drive's rating, and don't wear down your drive's lifetime if you
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) don't need to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * If you mount some of your ext3/reiserfs filesystems with the -n option, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) the control script will not be able to remount them correctly. You must set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) DO_REMOUNTS=0 in the control script, otherwise it will remount them with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) wrong options -- or it will fail because it cannot write to /etc/mtab.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * If you have your filesystems listed as type "auto" in fstab, like I did, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) the control script will not recognize them as filesystems that need remounting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) You must list the filesystems with their true type instead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * It has been reported that some versions of the mutt mail client use file access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) times to determine whether a folder contains new mail. If you use mutt and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) experience this, you must disable the noatime remounting by setting the option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) DO_REMOUNT_NOATIME to 0 in the configuration file.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) The Details
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) Laptop mode is controlled by the knob /proc/sys/vm/laptop_mode. This knob is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) present for all kernels that have the laptop mode patch, regardless of any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) configuration options. When the knob is set, any physical disk I/O (that might
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) have caused the hard disk to spin up) causes Linux to flush all dirty blocks. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) result of this is that after a disk has spun down, it will not be spun up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) anymore to write dirty blocks, because those blocks had already been written
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) immediately after the most recent read operation. The value of the laptop_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) knob determines the time between the occurrence of disk I/O and when the flush
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) is triggered. A sensible value for the knob is 5 seconds. Setting the knob to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 0 disables laptop mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) To increase the effectiveness of the laptop_mode strategy, the laptop_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) control script increases dirty_expire_centisecs and dirty_writeback_centisecs in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /proc/sys/vm to about 10 minutes (by default), which means that pages that are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) dirtied are not forced to be written to disk as often. The control script also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) changes the dirty background ratio, so that background writeback of dirty pages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) is not done anymore. Combined with a higher commit value (also 10 minutes) for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ext3 or ReiserFS filesystems (also done automatically by the control script),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) this results in concentration of disk activity in a small time interval which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) occurs only once every 10 minutes, or whenever the disk is forced to spin up by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) a cache miss. The disk can then be spun down in the periods of inactivity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) If you want to find out which process caused the disk to spin up, you can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) gather information by setting the flag /proc/sys/vm/block_dump. When this flag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) is set, Linux reports all disk read and write operations that take place, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) all block dirtyings done to files. This makes it possible to debug why a disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) needs to spin up, and to increase battery life even more. The output of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) block_dump is written to the kernel output, and it can be retrieved using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) "dmesg". When you use block_dump and your kernel logging level also includes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) kernel debugging messages, you probably want to turn off klogd, otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) the output of block_dump will be logged, causing disk activity that is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) normally there.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) Configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) -------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) The laptop mode configuration file is located in /etc/default/laptop-mode on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) Debian-based systems, or in /etc/sysconfig/laptop-mode on other systems. It
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) contains the following options:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) MAX_AGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) Maximum time, in seconds, of hard drive spindown time that you are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) comfortable with. Worst case, it's possible that you could lose this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) amount of work if your battery fails while you're in laptop mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) MINIMUM_BATTERY_MINUTES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) Automatically disable laptop mode if the remaining number of minutes of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) battery power is less than this value. Default is 10 minutes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) AC_HD/BATT_HD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) The idle timeout that should be set on your hard drive when laptop mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) is active (BATT_HD) and when it is not active (AC_HD). The defaults are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 20 seconds (value 4) for BATT_HD and 2 hours (value 244) for AC_HD. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) possible values are those listed in the manual page for "hdparm" for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) "-S" option.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) HD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) The devices for which the spindown timeout should be adjusted by laptop mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) Default is /dev/hda. If you specify multiple devices, separate them by a space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) READAHEAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) Disk readahead, in 512-byte sectors, while laptop mode is active. A large
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) readahead can prevent disk accesses for things like executable pages (which are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) loaded on demand while the application executes) and sequentially accessed data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) (MP3s).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) DO_REMOUNTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) The control script automatically remounts any mounted journaled filesystems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) with appropriate commit interval options. When this option is set to 0, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) feature is disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) DO_REMOUNT_NOATIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) When remounting, should the filesystems be remounted with the noatime option?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) Normally, this is set to "1" (enabled), but there may be programs that require
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) access time recording.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) DIRTY_RATIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) The percentage of memory that is allowed to contain "dirty" or unsaved data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) before a writeback is forced, while laptop mode is active. Corresponds to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) the /proc/sys/vm/dirty_ratio sysctl.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) DIRTY_BACKGROUND_RATIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) The percentage of memory that is allowed to contain "dirty" or unsaved data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) after a forced writeback is done due to an exceeding of DIRTY_RATIO. Set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) this nice and low. This corresponds to the /proc/sys/vm/dirty_background_ratio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) sysctl.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) Note that the behaviour of dirty_background_ratio is quite different
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) when laptop mode is active and when it isn't. When laptop mode is inactive,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) dirty_background_ratio is the threshold percentage at which background writeouts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) start taking place. When laptop mode is active, however, background writeouts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) are disabled, and the dirty_background_ratio only determines how much writeback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) is done when dirty_ratio is reached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) DO_CPU:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) Enable CPU frequency scaling when in laptop mode. (Requires CPUFreq to be setup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) See Documentation/admin-guide/pm/cpufreq.rst for more info. Disabled by default.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) CPU_MAXFREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) When on battery, what is the maximum CPU speed that the system should use? Legal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) values are "slowest" for the slowest speed that your CPU is able to operate at,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) or a value listed in /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) Tips & Tricks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) -------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * Bartek Kania reports getting up to 50 minutes of extra battery life (on top
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) of his regular 3 to 3.5 hours) using a spindown time of 5 seconds (BATT_HD=1).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * You can spin down the disk while playing MP3, by setting disk readahead
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) to 8MB (READAHEAD=16384). Effectively, the disk will read a complete MP3 at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) once, and will then spin down while the MP3 is playing. (Thanks to Bartek
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) Kania.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * Drew Scott Daniels observed: "I don't know why, but when I decrease the number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) of colours that my display uses it consumes less battery power. I've seen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) this on powerbooks too. I hope that this is a piece of information that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) might be useful to the Laptop Mode patch or its users."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * In syslog.conf, you can prefix entries with a dash `-` to omit syncing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) file after every logging. When you're using laptop-mode and your disk doesn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) spin down, this is a likely culprit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * Richard Atterer observed that laptop mode does not work well with noflushd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) (http://noflushd.sourceforge.net/), it seems that noflushd prevents laptop-mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) from doing its thing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * If you're worried about your data, you might want to consider using a USB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) memory stick or something like that as a "working area". (Be aware though
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) that flash memory can only handle a limited number of writes, and overuse
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) may wear out your memory stick pretty quickly. Do _not_ use journalling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) filesystems on flash memory sticks.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) Configuration file for control and ACPI battery scripts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) -------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) This allows the tunables to be changed for the scripts via an external
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) configuration file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) It should be installed as /etc/default/laptop-mode on Debian, and as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /etc/sysconfig/laptop-mode on Red Hat, SUSE, Mandrake, and other work-alikes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) Config file::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) # Maximum time, in seconds, of hard drive spindown time that you are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) # comfortable with. Worst case, it's possible that you could lose this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) # amount of work if your battery fails you while in laptop mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) #MAX_AGE=600
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) # Automatically disable laptop mode when the number of minutes of battery
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) # that you have left goes below this threshold.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) MINIMUM_BATTERY_MINUTES=10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) # Read-ahead, in 512-byte sectors. You can spin down the disk while playing MP3/OGG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) # by setting the disk readahead to 8MB (READAHEAD=16384). Effectively, the disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) # will read a complete MP3 at once, and will then spin down while the MP3/OGG is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) # playing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #READAHEAD=4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) # Shall we remount journaled fs. with appropriate commit interval? (1=yes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) #DO_REMOUNTS=1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) # And shall we add the "noatime" option to that as well? (1=yes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) #DO_REMOUNT_NOATIME=1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) # Dirty synchronous ratio. At this percentage of dirty pages the process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) # which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) # calls write() does its own writeback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) #DIRTY_RATIO=40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) # Allowed dirty background ratio, in percent. Once DIRTY_RATIO has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) # exceeded, the kernel will wake flusher threads which will then reduce the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) # amount of dirty memory to dirty_background_ratio. Set this nice and low,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) # so once some writeout has commenced, we do a lot of it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #DIRTY_BACKGROUND_RATIO=5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) # kernel default dirty buffer age
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) #DEF_AGE=30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) #DEF_UPDATE=5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) #DEF_DIRTY_BACKGROUND_RATIO=10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) #DEF_DIRTY_RATIO=40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) #DEF_XFS_AGE_BUFFER=15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) #DEF_XFS_SYNC_INTERVAL=30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) #DEF_XFS_BUFD_INTERVAL=1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) # This must be adjusted manually to the value of HZ in the running kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) # on 2.4, until the XFS people change their 2.4 external interfaces to work in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) # centisecs. This can be automated, but it's a work in progress that still
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) # needs# some fixes. On 2.6 kernels, XFS uses USER_HZ instead of HZ for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) # external interfaces, and that is currently always set to 100. So you don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) # need to change this on 2.6.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) #XFS_HZ=100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) # Should the maximum CPU frequency be adjusted down while on battery?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) # Requires CPUFreq to be setup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) # See Documentation/admin-guide/pm/cpufreq.rst for more info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) #DO_CPU=0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) # When on battery what is the maximum CPU speed that the system should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) # use? Legal values are "slowest" for the slowest speed that your
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) # CPU is able to operate at, or a value listed in:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) # /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) # Only applicable if DO_CPU=1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) #CPU_MAXFREQ=slowest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) # Idle timeout for your hard drive (man hdparm for valid values, -S option)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) # Default is 2 hours on AC (AC_HD=244) and 20 seconds for battery (BATT_HD=4).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) #AC_HD=244
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) #BATT_HD=4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) # The drives for which to adjust the idle timeout. Separate them by a space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) # e.g. HD="/dev/hda /dev/hdb".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) #HD="/dev/hda"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) # Set the spindown timeout on a hard drive?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) #DO_HD=1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) Control script
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) --------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) Please note that this control script works for the Linux 2.4 and 2.6 series (thanks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) to Kiko Piris).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) Control script::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) #!/bin/bash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) # start or stop laptop_mode, best run by a power management daemon when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) # ac gets connected/disconnected from a laptop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) # install as /sbin/laptop_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) # Contributors to this script: Kiko Piris
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) # Bart Samwel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) # Micha Feigin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) # Andrew Morton
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) # Herve Eychenne
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) # Dax Kelson
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) # Original Linux 2.4 version by: Jens Axboe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) #############################################################################
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) # Source config
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) if [ -f /etc/default/laptop-mode ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) # Debian
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) . /etc/default/laptop-mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) elif [ -f /etc/sysconfig/laptop-mode ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) # Others
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) . /etc/sysconfig/laptop-mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) # Don't raise an error if the config file is incomplete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) # set defaults instead:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) # Maximum time, in seconds, of hard drive spindown time that you are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) # comfortable with. Worst case, it's possible that you could lose this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) # amount of work if your battery fails you while in laptop mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) MAX_AGE=${MAX_AGE:-'600'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) # Read-ahead, in kilobytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) READAHEAD=${READAHEAD:-'4096'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) # Shall we remount journaled fs. with appropriate commit interval? (1=yes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) DO_REMOUNTS=${DO_REMOUNTS:-'1'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) # And shall we add the "noatime" option to that as well? (1=yes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) DO_REMOUNT_NOATIME=${DO_REMOUNT_NOATIME:-'1'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) # Shall we adjust the idle timeout on a hard drive?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) DO_HD=${DO_HD:-'1'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) # Adjust idle timeout on which hard drive?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) HD="${HD:-'/dev/hda'}"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) # spindown time for HD (hdparm -S values)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) AC_HD=${AC_HD:-'244'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) BATT_HD=${BATT_HD:-'4'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) # Dirty synchronous ratio. At this percentage of dirty pages the process which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) # calls write() does its own writeback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) DIRTY_RATIO=${DIRTY_RATIO:-'40'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) # cpu frequency scaling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) # See Documentation/admin-guide/pm/cpufreq.rst for more info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) DO_CPU=${CPU_MANAGE:-'0'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) CPU_MAXFREQ=${CPU_MAXFREQ:-'slowest'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) # Allowed dirty background ratio, in percent. Once DIRTY_RATIO has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) # exceeded, the kernel will wake flusher threads which will then reduce the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) # amount of dirty memory to dirty_background_ratio. Set this nice and low,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) # so once some writeout has commenced, we do a lot of it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) DIRTY_BACKGROUND_RATIO=${DIRTY_BACKGROUND_RATIO:-'5'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) # kernel default dirty buffer age
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) DEF_AGE=${DEF_AGE:-'30'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) DEF_UPDATE=${DEF_UPDATE:-'5'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) DEF_DIRTY_BACKGROUND_RATIO=${DEF_DIRTY_BACKGROUND_RATIO:-'10'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) DEF_DIRTY_RATIO=${DEF_DIRTY_RATIO:-'40'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) DEF_XFS_AGE_BUFFER=${DEF_XFS_AGE_BUFFER:-'15'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) DEF_XFS_SYNC_INTERVAL=${DEF_XFS_SYNC_INTERVAL:-'30'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) DEF_XFS_BUFD_INTERVAL=${DEF_XFS_BUFD_INTERVAL:-'1'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) # This must be adjusted manually to the value of HZ in the running kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) # on 2.4, until the XFS people change their 2.4 external interfaces to work in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) # centisecs. This can be automated, but it's a work in progress that still needs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) # some fixes. On 2.6 kernels, XFS uses USER_HZ instead of HZ for external
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) # interfaces, and that is currently always set to 100. So you don't need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) # change this on 2.6.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) XFS_HZ=${XFS_HZ:-'100'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) #############################################################################
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) KLEVEL="$(uname -r |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) IFS='.' read a b c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) echo $a.$b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) )"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) case "$KLEVEL" in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) "2.4"|"2.6")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) echo "Unhandled kernel version: $KLEVEL ('uname -r' = '$(uname -r)')" >&2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) exit 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) esac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if [ ! -e /proc/sys/vm/laptop_mode ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) echo "Kernel is not patched with laptop_mode patch." >&2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) exit 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) if [ ! -w /proc/sys/vm/laptop_mode ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) echo "You do not have enough privileges to enable laptop_mode." >&2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) exit 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) # Remove an option (the first parameter) of the form option=<number> from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) # a mount options string (the rest of the parameters).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) parse_mount_opts () {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) OPT="$1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) shift
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) echo ",$*," | sed \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) -e 's/,'"$OPT"'=[0-9]*,/,/g' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) -e 's/,,*/,/g' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) -e 's/^,//' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) -e 's/,$//'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) # Remove an option (the first parameter) without any arguments from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) # a mount option string (the rest of the parameters).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) parse_nonumber_mount_opts () {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) OPT="$1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) shift
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) echo ",$*," | sed \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) -e 's/,'"$OPT"',/,/g' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) -e 's/,,*/,/g' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) -e 's/^,//' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) -e 's/,$//'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) # Find out the state of a yes/no option (e.g. "atime"/"noatime") in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) # fstab for a given filesystem, and use this state to replace the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) # value of the option in another mount options string. The device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) # is the first argument, the option name the second, and the default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) # value the third. The remainder is the mount options string.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) # Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) # parse_yesno_opts_wfstab /dev/hda1 atime atime defaults,noatime
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) # If fstab contains, say, "rw" for this filesystem, then the result
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) # will be "defaults,atime".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) parse_yesno_opts_wfstab () {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) L_DEV="$1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) OPT="$2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) DEF_OPT="$3"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) shift 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) L_OPTS="$*"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) PARSEDOPTS1="$(parse_nonumber_mount_opts $OPT $L_OPTS)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) PARSEDOPTS1="$(parse_nonumber_mount_opts no$OPT $PARSEDOPTS1)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) # Watch for a default atime in fstab
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) FSTAB_OPTS="$(awk '$1 == "'$L_DEV'" { print $4 }' /etc/fstab)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if echo "$FSTAB_OPTS" | grep "$OPT" > /dev/null ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) # option specified in fstab: extract the value and use it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if echo "$FSTAB_OPTS" | grep "no$OPT" > /dev/null ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) echo "$PARSEDOPTS1,no$OPT"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) # no$OPT not found -- so we must have $OPT.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) echo "$PARSEDOPTS1,$OPT"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) # option not specified in fstab -- choose the default.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) echo "$PARSEDOPTS1,$DEF_OPT"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) # Find out the state of a numbered option (e.g. "commit=NNN") in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) # fstab for a given filesystem, and use this state to replace the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) # value of the option in another mount options string. The device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) # is the first argument, and the option name the second. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) # remainder is the mount options string in which the replacement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) # must be done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) # Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) # parse_mount_opts_wfstab /dev/hda1 commit defaults,commit=7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) # If fstab contains, say, "commit=3,rw" for this filesystem, then the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) # result will be "rw,commit=3".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) parse_mount_opts_wfstab () {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) L_DEV="$1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) OPT="$2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) shift 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) L_OPTS="$*"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) PARSEDOPTS1="$(parse_mount_opts $OPT $L_OPTS)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) # Watch for a default commit in fstab
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) FSTAB_OPTS="$(awk '$1 == "'$L_DEV'" { print $4 }' /etc/fstab)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if echo "$FSTAB_OPTS" | grep "$OPT=" > /dev/null ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) # option specified in fstab: extract the value, and use it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) echo -n "$PARSEDOPTS1,$OPT="
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) echo ",$FSTAB_OPTS," | sed \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) -e 's/.*,'"$OPT"'=//' \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) -e 's/,.*//'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) # option not specified in fstab: set it to 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) echo "$PARSEDOPTS1,$OPT=0"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) deduce_fstype () {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) MP="$1"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) # My root filesystem unfortunately has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) # type "unknown" in /etc/mtab. If we encounter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) # "unknown", we try to get the type from fstab.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) cat /etc/fstab |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) grep -v '^#' |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) while read FSTAB_DEV FSTAB_MP FSTAB_FST FSTAB_OPTS FSTAB_DUMP FSTAB_DUMP ; do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if [ "$FSTAB_MP" = "$MP" ]; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) echo $FSTAB_FST
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) exit 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if [ $DO_REMOUNT_NOATIME -eq 1 ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) NOATIME_OPT=",noatime"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) case "$1" in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) AGE=$((100*$MAX_AGE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) XFS_AGE=$(($XFS_HZ*$MAX_AGE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) echo -n "Starting laptop_mode"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if [ -d /proc/sys/vm/pagebuf ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) # (For 2.4 and early 2.6.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) # This only needs to be set, not reset -- it is only used when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) # laptop mode is enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) echo $XFS_AGE > /proc/sys/vm/pagebuf/lm_flush_age
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) echo $XFS_AGE > /proc/sys/fs/xfs/lm_sync_interval
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) elif [ -f /proc/sys/fs/xfs/lm_age_buffer ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) # (A couple of early 2.6 laptop mode patches had these.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) # The same goes for these.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) echo $XFS_AGE > /proc/sys/fs/xfs/lm_age_buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) echo $XFS_AGE > /proc/sys/fs/xfs/lm_sync_interval
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) elif [ -f /proc/sys/fs/xfs/age_buffer ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) # (2.6.6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) # But not for these -- they are also used in normal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) # operation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) echo $XFS_AGE > /proc/sys/fs/xfs/age_buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) echo $XFS_AGE > /proc/sys/fs/xfs/sync_interval
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) elif [ -f /proc/sys/fs/xfs/age_buffer_centisecs ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) # (2.6.7 upwards)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) # And not for these either. These are in centisecs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) # not USER_HZ, so we have to use $AGE, not $XFS_AGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) echo $AGE > /proc/sys/fs/xfs/age_buffer_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) echo $AGE > /proc/sys/fs/xfs/xfssyncd_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) echo 3000 > /proc/sys/fs/xfs/xfsbufd_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) case "$KLEVEL" in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) "2.4")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) echo 1 > /proc/sys/vm/laptop_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) echo "30 500 0 0 $AGE $AGE 60 20 0" > /proc/sys/vm/bdflush
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) "2.6")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) echo 5 > /proc/sys/vm/laptop_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) echo "$AGE" > /proc/sys/vm/dirty_writeback_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) echo "$AGE" > /proc/sys/vm/dirty_expire_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) echo "$DIRTY_RATIO" > /proc/sys/vm/dirty_ratio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) echo "$DIRTY_BACKGROUND_RATIO" > /proc/sys/vm/dirty_background_ratio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) esac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if [ $DO_REMOUNTS -eq 1 ]; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) cat /etc/mtab | while read DEV MP FST OPTS DUMP PASS ; do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) PARSEDOPTS="$(parse_mount_opts "$OPTS")"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if [ "$FST" = 'unknown' ]; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) FST=$(deduce_fstype $MP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) case "$FST" in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) "ext3"|"reiserfs")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) PARSEDOPTS="$(parse_mount_opts commit "$OPTS")"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) mount $DEV -t $FST $MP -o remount,$PARSEDOPTS,commit=$MAX_AGE$NOATIME_OPT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) "xfs")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) mount $DEV -t $FST $MP -o remount,$OPTS$NOATIME_OPT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) esac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) if [ -b $DEV ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) blockdev --setra $(($READAHEAD * 2)) $DEV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) if [ $DO_HD -eq 1 ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) for THISHD in $HD ; do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) /sbin/hdparm -S $BATT_HD $THISHD > /dev/null 2>&1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) /sbin/hdparm -B 1 $THISHD > /dev/null 2>&1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if [ $DO_CPU -eq 1 -a -e /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq ]; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) if [ $CPU_MAXFREQ = 'slowest' ]; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) CPU_MAXFREQ=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq`
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) echo $CPU_MAXFREQ > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) echo "."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) stop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) U_AGE=$((100*$DEF_UPDATE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) B_AGE=$((100*$DEF_AGE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) echo -n "Stopping laptop_mode"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) echo 0 > /proc/sys/vm/laptop_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) if [ -f /proc/sys/fs/xfs/age_buffer -a ! -f /proc/sys/fs/xfs/lm_age_buffer ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) # These need to be restored, if there are no lm_*.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) echo $(($XFS_HZ*$DEF_XFS_AGE_BUFFER)) > /proc/sys/fs/xfs/age_buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) echo $(($XFS_HZ*$DEF_XFS_SYNC_INTERVAL)) > /proc/sys/fs/xfs/sync_interval
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) elif [ -f /proc/sys/fs/xfs/age_buffer_centisecs ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) # These need to be restored as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) echo $((100*$DEF_XFS_AGE_BUFFER)) > /proc/sys/fs/xfs/age_buffer_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) echo $((100*$DEF_XFS_SYNC_INTERVAL)) > /proc/sys/fs/xfs/xfssyncd_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) echo $((100*$DEF_XFS_BUFD_INTERVAL)) > /proc/sys/fs/xfs/xfsbufd_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) case "$KLEVEL" in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) "2.4")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) echo "30 500 0 0 $U_AGE $B_AGE 60 20 0" > /proc/sys/vm/bdflush
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) "2.6")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) echo "$U_AGE" > /proc/sys/vm/dirty_writeback_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) echo "$B_AGE" > /proc/sys/vm/dirty_expire_centisecs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) echo "$DEF_DIRTY_RATIO" > /proc/sys/vm/dirty_ratio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) echo "$DEF_DIRTY_BACKGROUND_RATIO" > /proc/sys/vm/dirty_background_ratio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) esac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if [ $DO_REMOUNTS -eq 1 ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) cat /etc/mtab | while read DEV MP FST OPTS DUMP PASS ; do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) # Reset commit and atime options to defaults.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) if [ "$FST" = 'unknown' ]; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) FST=$(deduce_fstype $MP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) case "$FST" in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) "ext3"|"reiserfs")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) PARSEDOPTS="$(parse_mount_opts_wfstab $DEV commit $OPTS)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) PARSEDOPTS="$(parse_yesno_opts_wfstab $DEV atime atime $PARSEDOPTS)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) mount $DEV -t $FST $MP -o remount,$PARSEDOPTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) "xfs")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) PARSEDOPTS="$(parse_yesno_opts_wfstab $DEV atime atime $OPTS)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) mount $DEV -t $FST $MP -o remount,$PARSEDOPTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) esac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if [ -b $DEV ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) blockdev --setra 256 $DEV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) if [ $DO_HD -eq 1 ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) for THISHD in $HD ; do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /sbin/hdparm -S $AC_HD $THISHD > /dev/null 2>&1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) /sbin/hdparm -B 255 $THISHD > /dev/null 2>&1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if [ $DO_CPU -eq 1 -a -e /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq ]; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) echo `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq` > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) echo "."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) echo "Usage: $0 {start|stop}" 2>&1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) exit 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) esac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) exit 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) ACPI integration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) ----------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) Dax Kelson submitted this so that the ACPI acpid daemon will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) kick off the laptop_mode script and run hdparm. The part that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) automatically disables laptop mode when the battery is low was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) written by Jan Topinski.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) /etc/acpi/events/ac_adapter::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) event=ac_adapter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) action=/etc/acpi/actions/ac.sh %e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) /etc/acpi/events/battery::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) event=battery.*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) action=/etc/acpi/actions/battery.sh %e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) /etc/acpi/actions/ac.sh::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) #!/bin/bash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) # ac on/offline event handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) status=`awk '/^state: / { print $2 }' /proc/acpi/ac_adapter/$2/state`
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) case $status in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) "on-line")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) /sbin/laptop_mode stop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) exit 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) "off-line")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) /sbin/laptop_mode start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) exit 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) ;;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) esac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) /etc/acpi/actions/battery.sh::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) #! /bin/bash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) # Automatically disable laptop mode when the battery almost runs out.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) BATT_INFO=/proc/acpi/battery/$2/state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if [[ -f /proc/sys/vm/laptop_mode ]]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) LM=`cat /proc/sys/vm/laptop_mode`
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if [[ $LM -gt 0 ]]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if [[ -f $BATT_INFO ]]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) # Source the config file only now that we know we need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) if [ -f /etc/default/laptop-mode ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) # Debian
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) . /etc/default/laptop-mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) elif [ -f /etc/sysconfig/laptop-mode ] ; then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) # Others
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) . /etc/sysconfig/laptop-mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) MINIMUM_BATTERY_MINUTES=${MINIMUM_BATTERY_MINUTES:-'10'}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) ACTION="`cat $BATT_INFO | grep charging | cut -c 26-`"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) if [[ ACTION -eq "discharging" ]]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) PRESENT_RATE=`cat $BATT_INFO | grep "present rate:" | sed "s/.* \([0-9][0-9]* \).*/\1/" `
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) REMAINING=`cat $BATT_INFO | grep "remaining capacity:" | sed "s/.* \([0-9][0-9]* \).*/\1/" `
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) if (($REMAINING * 60 / $PRESENT_RATE < $MINIMUM_BATTERY_MINUTES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) /sbin/laptop_mode stop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) logger -p daemon.warning "You are using laptop mode and your battery interface $BATT_INFO is missing. This may lead to loss of data when the battery runs out. Check kernel ACPI support and /proc/acpi/battery folder, and edit /etc/acpi/battery.sh to set BATT_INFO to the correct path."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) fi
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) Monitoring tool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) ---------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) Bartek Kania submitted this, it can be used to measure how much time your disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) spends spun up/down. See tools/laptop/dslm/dslm.c
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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