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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/nfsd/stats.h
3 *
4 * Statistics for NFS server.
5 *
6 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
7 */
8
9#ifndef LINUX_NFSD_STATS_H
10#define LINUX_NFSD_STATS_H
11
12struct nfsd_stats {
13 unsigned int rchits; /* repcache hits */
14 unsigned int rcmisses; /* repcache hits */
15 unsigned int rcnocache; /* uncached reqs */
16 unsigned int fh_stale; /* FH stale error */
17 unsigned int fh_lookup; /* dentry cached */
18 unsigned int fh_anon; /* anon file dentry returned */
19 unsigned int fh_nocache_dir; /* filehandle not found in dcache */
20 unsigned int fh_nocache_nondir; /* filehandle not found in dcache */
21 unsigned int io_read; /* bytes returned to read requests */
22 unsigned int io_write; /* bytes passed in write requests */
23 unsigned int th_cnt; /* number of available threads */
24 unsigned int th_usage[10]; /* number of ticks during which n perdeciles
25 * of available threads were in use */
26 unsigned int th_fullcnt; /* number of times last free thread was used */
27 unsigned int ra_size; /* size of ra cache */
28 unsigned int ra_depth[11]; /* number of times ra entry was found that deep
29 * in the cache (10percentiles). [10] = not found */
30};
31
32/* thread usage wraps very million seconds (approx one fortnight) */
33#define NFSD_USAGE_WRAP (HZ*1000000)
34
35#ifdef __KERNEL__
36
37extern struct nfsd_stats nfsdstats;
38extern struct svc_stat nfsd_svcstats;
39
40void nfsd_stat_init(void);
41void nfsd_stat_shutdown(void);
42
43#endif /* __KERNEL__ */
44#endif /* LINUX_NFSD_STATS_H */