blob: 3fc69dfd30917fe6a7bbfc1dea91d958ca4a12a6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/nfsd/stats.c
3 *
4 * procfs-based user access to knfsd statistics
5 *
6 * /proc/net/rpc/nfsd
7 *
8 * Format:
9 * rc <hits> <misses> <nocache>
10 * Statistsics for the reply cache
11 * fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
12 * statistics for filehandle lookup
13 * io <bytes-read> <bytes-writtten>
14 * statistics for IO throughput
15 * th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%>
16 * time (seconds) when nfsd thread usage above thresholds
17 * and number of times that all threads were in use
18 * ra cache-size <10% <20% <30% ... <100% not-found
19 * number of times that read-ahead entry was found that deep in
20 * the cache.
21 * plus generic RPC stats (see net/sunrpc/stats.c)
22 *
23 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
24 */
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <linux/seq_file.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <linux/sunrpc/stats.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/nfsd/stats.h>
30
Boaz Harrosh9a74af22009-12-03 20:30:56 +020031#include "nfsd.h"
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033struct nfsd_stats nfsdstats;
34struct svc_stat nfsd_svcstats = {
35 .program = &nfsd_program,
36};
37
38static int nfsd_proc_show(struct seq_file *seq, void *v)
39{
40 int i;
41
42 seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
43 nfsdstats.rchits,
44 nfsdstats.rcmisses,
45 nfsdstats.rcnocache,
46 nfsdstats.fh_stale,
47 nfsdstats.fh_lookup,
48 nfsdstats.fh_anon,
49 nfsdstats.fh_nocache_dir,
50 nfsdstats.fh_nocache_nondir,
51 nfsdstats.io_read,
52 nfsdstats.io_write);
53 /* thread usage: */
54 seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
55 for (i=0; i<10; i++) {
56 unsigned int jifs = nfsdstats.th_usage[i];
57 unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
58 seq_printf(seq, " %u.%03u", sec, msec);
59 }
60
61 /* newline and ra-cache */
62 seq_printf(seq, "\nra %u", nfsdstats.ra_size);
63 for (i=0; i<11; i++)
64 seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
65 seq_putc(seq, '\n');
66
67 /* show my rpc info */
68 svc_seq_show(seq, &nfsd_svcstats);
69
Shankar Anande2b20952006-07-10 04:45:44 -070070#ifdef CONFIG_NFSD_V4
71 /* Show count for individual nfsv4 operations */
72 /* Writing operation numbers 0 1 2 also for maintaining uniformity */
73 seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
74 for (i = 0; i <= LAST_NFS4_OP; i++)
75 seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);
76
77 seq_putc(seq, '\n');
78#endif
79
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 return 0;
81}
82
83static int nfsd_proc_open(struct inode *inode, struct file *file)
84{
85 return single_open(file, nfsd_proc_show, NULL);
86}
87
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -080088static const struct file_operations nfsd_proc_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 .owner = THIS_MODULE,
90 .open = nfsd_proc_open,
91 .read = seq_read,
92 .llseek = seq_lseek,
93 .release = single_release,
94};
95
96void
97nfsd_stat_init(void)
98{
99 svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops);
100}
101
102void
103nfsd_stat_shutdown(void)
104{
105 svc_proc_unregister("nfsd");
106}