^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * procfs-based user access to knfsd statistics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * /proc/net/rpc/nfsd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Format:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * rc <hits> <misses> <nocache>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Statistsics for the reply cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * statistics for filehandle lookup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * io <bytes-read> <bytes-written>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * statistics for IO throughput
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * time (seconds) when nfsd thread usage above thresholds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * and number of times that all threads were in use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * ra cache-size <10% <20% <30% ... <100% not-found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * number of times that read-ahead entry was found that deep in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * the cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * plus generic RPC stats (see net/sunrpc/stats.c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/sunrpc/stats.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <net/net_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "nfsd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct nfsd_stats nfsdstats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct svc_stat nfsd_svcstats = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) .program = &nfsd_program,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static int nfsd_proc_show(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) nfsdstats.rchits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) nfsdstats.rcmisses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) nfsdstats.rcnocache,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) nfsdstats.fh_stale,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) nfsdstats.fh_lookup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) nfsdstats.fh_anon,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) nfsdstats.fh_nocache_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) nfsdstats.fh_nocache_nondir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) nfsdstats.io_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) nfsdstats.io_write);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* thread usage: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) for (i=0; i<10; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) unsigned int jifs = nfsdstats.th_usage[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) seq_printf(seq, " %u.%03u", sec, msec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /* newline and ra-cache */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) seq_printf(seq, "\nra %u", nfsdstats.ra_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) for (i=0; i<11; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) seq_putc(seq, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* show my rpc info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) svc_seq_show(seq, &nfsd_svcstats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #ifdef CONFIG_NFSD_V4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* Show count for individual nfsv4 operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* Writing operation numbers 0 1 2 also for maintaining uniformity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) for (i = 0; i <= LAST_NFS4_OP; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) seq_putc(seq, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return 0;
^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) static int nfsd_proc_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return single_open(file, nfsd_proc_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static const struct proc_ops nfsd_proc_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .proc_open = nfsd_proc_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .proc_read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .proc_lseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .proc_release = single_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) nfsd_stat_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) nfsd_stat_shutdown(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) svc_proc_unregister(&init_net, "nfsd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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