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1/*
2 * procfs-based user access to knfsd statistics
3 *
4 * /proc/net/rpc/nfsd
5 *
6 * Format:
7 * rc <hits> <misses> <nocache>
8 * Statistsics for the reply cache
9 * fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
10 * statistics for filehandle lookup
11 * io <bytes-read> <bytes-written>
12 * statistics for IO throughput
13 * th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%>
14 * time (seconds) when nfsd thread usage above thresholds
15 * and number of times that all threads were in use
16 * ra cache-size <10% <20% <30% ... <100% not-found
17 * number of times that read-ahead entry was found that deep in
18 * the cache.
19 * plus generic RPC stats (see net/sunrpc/stats.c)
20 *
21 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
22 */
23
24#include <linux/seq_file.h>
25#include <linux/module.h>
26#include <linux/sunrpc/stats.h>
27#include <linux/nfsd/stats.h>
28
29#include "nfsd.h"
30
31struct nfsd_stats nfsdstats;
32struct svc_stat nfsd_svcstats = {
33 .program = &nfsd_program,
34};
35
36static int nfsd_proc_show(struct seq_file *seq, void *v)
37{
38 int i;
39
40 seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
41 nfsdstats.rchits,
42 nfsdstats.rcmisses,
43 nfsdstats.rcnocache,
44 nfsdstats.fh_stale,
45 nfsdstats.fh_lookup,
46 nfsdstats.fh_anon,
47 nfsdstats.fh_nocache_dir,
48 nfsdstats.fh_nocache_nondir,
49 nfsdstats.io_read,
50 nfsdstats.io_write);
51 /* thread usage: */
52 seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
53 for (i=0; i<10; i++) {
54 unsigned int jifs = nfsdstats.th_usage[i];
55 unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
56 seq_printf(seq, " %u.%03u", sec, msec);
57 }
58
59 /* newline and ra-cache */
60 seq_printf(seq, "\nra %u", nfsdstats.ra_size);
61 for (i=0; i<11; i++)
62 seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
63 seq_putc(seq, '\n');
64
65 /* show my rpc info */
66 svc_seq_show(seq, &nfsd_svcstats);
67
68#ifdef CONFIG_NFSD_V4
69 /* Show count for individual nfsv4 operations */
70 /* Writing operation numbers 0 1 2 also for maintaining uniformity */
71 seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
72 for (i = 0; i <= LAST_NFS4_OP; i++)
73 seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);
74
75 seq_putc(seq, '\n');
76#endif
77
78 return 0;
79}
80
81static int nfsd_proc_open(struct inode *inode, struct file *file)
82{
83 return single_open(file, nfsd_proc_show, NULL);
84}
85
86static const struct file_operations nfsd_proc_fops = {
87 .owner = THIS_MODULE,
88 .open = nfsd_proc_open,
89 .read = seq_read,
90 .llseek = seq_lseek,
91 .release = single_release,
92};
93
94void
95nfsd_stat_init(void)
96{
97 svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops);
98}
99
100void
101nfsd_stat_shutdown(void)
102{
103 svc_proc_unregister("nfsd");
104}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * procfs-based user access to knfsd statistics
4 *
5 * /proc/net/rpc/nfsd
6 *
7 * Format:
8 * rc <hits> <misses> <nocache>
9 * Statistsics for the reply cache
10 * fh <stale> <deprecated filehandle cache stats>
11 * statistics for filehandle lookup
12 * io <bytes-read> <bytes-written>
13 * statistics for IO throughput
14 * th <threads> <deprecated thread usage histogram stats>
15 * number of threads
16 * ra <deprecated ra-cache stats>
17 *
18 * plus generic RPC stats (see net/sunrpc/stats.c)
19 *
20 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
21 */
22
23#include <linux/seq_file.h>
24#include <linux/module.h>
25#include <linux/sunrpc/stats.h>
26#include <net/net_namespace.h>
27
28#include "nfsd.h"
29
30static int nfsd_show(struct seq_file *seq, void *v)
31{
32 struct net *net = pde_data(file_inode(seq->file));
33 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
34 int i;
35
36 seq_printf(seq, "rc %lld %lld %lld\nfh %lld 0 0 0 0\nio %lld %lld\n",
37 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_HITS]),
38 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_MISSES]),
39 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_NOCACHE]),
40 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_FH_STALE]),
41 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_READ]),
42 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_WRITE]));
43
44 /* thread usage: */
45 seq_printf(seq, "th %u 0", atomic_read(&nfsd_th_cnt));
46
47 /* deprecated thread usage histogram stats */
48 for (i = 0; i < 10; i++)
49 seq_puts(seq, " 0.000");
50
51 /* deprecated ra-cache stats */
52 seq_puts(seq, "\nra 0 0 0 0 0 0 0 0 0 0 0 0\n");
53
54 /* show my rpc info */
55 svc_seq_show(seq, &nn->nfsd_svcstats);
56
57#ifdef CONFIG_NFSD_V4
58 /* Show count for individual nfsv4 operations */
59 /* Writing operation numbers 0 1 2 also for maintaining uniformity */
60 seq_printf(seq, "proc4ops %u", LAST_NFS4_OP + 1);
61 for (i = 0; i <= LAST_NFS4_OP; i++) {
62 seq_printf(seq, " %lld",
63 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_NFS4_OP(i)]));
64 }
65 seq_printf(seq, "\nwdeleg_getattr %lld",
66 percpu_counter_sum_positive(&nn->counter[NFSD_STATS_WDELEG_GETATTR]));
67
68 seq_putc(seq, '\n');
69#endif
70
71 return 0;
72}
73
74DEFINE_PROC_SHOW_ATTRIBUTE(nfsd);
75
76void nfsd_proc_stat_init(struct net *net)
77{
78 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
79
80 svc_proc_register(net, &nn->nfsd_svcstats, &nfsd_proc_ops);
81}
82
83void nfsd_proc_stat_shutdown(struct net *net)
84{
85 svc_proc_unregister(net, "nfsd");
86}