2 * procfs-based user access to knfsd statistics
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
19 * plus generic RPC stats (see net/sunrpc/stats.c)
21 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
24 #include <linux/seq_file.h>
25 #include <linux/module.h>
26 #include <linux/sunrpc/stats.h>
27 #include <net/net_namespace.h>
31 struct nfsd_stats nfsdstats;
32 struct svc_stat nfsd_svcstats = {
33 .program = &nfsd_program,
36 static int nfsd_proc_show(struct seq_file *seq, void *v)
40 seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
47 nfsdstats.fh_nocache_dir,
48 nfsdstats.fh_nocache_nondir,
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);
59 /* newline and ra-cache */
60 seq_printf(seq, "\nra %u", nfsdstats.ra_size);
62 seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
65 /* show my rpc info */
66 svc_seq_show(seq, &nfsd_svcstats);
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]);
81 static int nfsd_proc_open(struct inode *inode, struct file *file)
83 return single_open(file, nfsd_proc_show, NULL);
86 static const struct file_operations nfsd_proc_fops = {
88 .open = nfsd_proc_open,
91 .release = single_release,
97 svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_fops);
101 nfsd_stat_shutdown(void)
103 svc_proc_unregister(&init_net, "nfsd");