projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 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 <[email protected]> | |
| 24 | */ | |
| 25 | ||
| 26 | #include <linux/kernel.h> | |
| 27 | #include <linux/time.h> | |
| 28 | #include <linux/proc_fs.h> | |
| 29 | #include <linux/seq_file.h> | |
| 30 | #include <linux/stat.h> | |
| 31 | #include <linux/module.h> | |
| 32 | ||
| 33 | #include <linux/sunrpc/svc.h> | |
| 34 | #include <linux/sunrpc/stats.h> | |
| 35 | #include <linux/nfsd/nfsd.h> | |
| 36 | #include <linux/nfsd/stats.h> | |
| 37 | ||
| 38 | struct nfsd_stats nfsdstats; | |
| 39 | struct svc_stat nfsd_svcstats = { | |
| 40 | .program = &nfsd_program, | |
| 41 | }; | |
| 42 | ||
| 43 | static int nfsd_proc_show(struct seq_file *seq, void *v) | |
| 44 | { | |
| 45 | int i; | |
| 46 | ||
| 47 | seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n", | |
| 48 | nfsdstats.rchits, | |
| 49 | nfsdstats.rcmisses, | |
| 50 | nfsdstats.rcnocache, | |
| 51 | nfsdstats.fh_stale, | |
| 52 | nfsdstats.fh_lookup, | |
| 53 | nfsdstats.fh_anon, | |
| 54 | nfsdstats.fh_nocache_dir, | |
| 55 | nfsdstats.fh_nocache_nondir, | |
| 56 | nfsdstats.io_read, | |
| 57 | nfsdstats.io_write); | |
| 58 | /* thread usage: */ | |
| 59 | seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt); | |
| 60 | for (i=0; i<10; i++) { | |
| 61 | unsigned int jifs = nfsdstats.th_usage[i]; | |
| 62 | unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ; | |
| 63 | seq_printf(seq, " %u.%03u", sec, msec); | |
| 64 | } | |
| 65 | ||
| 66 | /* newline and ra-cache */ | |
| 67 | seq_printf(seq, "\nra %u", nfsdstats.ra_size); | |
| 68 | for (i=0; i<11; i++) | |
| 69 | seq_printf(seq, " %u", nfsdstats.ra_depth[i]); | |
| 70 | seq_putc(seq, '\n'); | |
| 71 | ||
| 72 | /* show my rpc info */ | |
| 73 | svc_seq_show(seq, &nfsd_svcstats); | |
| 74 | ||
| 75 | return 0; | |
| 76 | } | |
| 77 | ||
| 78 | static int nfsd_proc_open(struct inode *inode, struct file *file) | |
| 79 | { | |
| 80 | return single_open(file, nfsd_proc_show, NULL); | |
| 81 | } | |
| 82 | ||
| 83 | static struct file_operations nfsd_proc_fops = { | |
| 84 | .owner = THIS_MODULE, | |
| 85 | .open = nfsd_proc_open, | |
| 86 | .read = seq_read, | |
| 87 | .llseek = seq_lseek, | |
| 88 | .release = single_release, | |
| 89 | }; | |
| 90 | ||
| 91 | void | |
| 92 | nfsd_stat_init(void) | |
| 93 | { | |
| 94 | svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops); | |
| 95 | } | |
| 96 | ||
| 97 | void | |
| 98 | nfsd_stat_shutdown(void) | |
| 99 | { | |
| 100 | svc_proc_unregister("nfsd"); | |
| 101 | } |