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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Uwe Zeisbergerf30c2262006-10-03 23:01:26 +02002 * linux/include/linux/nfsd/stats.h
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
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
Shankar Anande2b20952006-07-10 04:45:44 -070012#include <linux/nfs4.h>
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014struct nfsd_stats {
15 unsigned int rchits; /* repcache hits */
16 unsigned int rcmisses; /* repcache hits */
17 unsigned int rcnocache; /* uncached reqs */
18 unsigned int fh_stale; /* FH stale error */
19 unsigned int fh_lookup; /* dentry cached */
20 unsigned int fh_anon; /* anon file dentry returned */
21 unsigned int fh_nocache_dir; /* filehandle not found in dcache */
22 unsigned int fh_nocache_nondir; /* filehandle not found in dcache */
23 unsigned int io_read; /* bytes returned to read requests */
24 unsigned int io_write; /* bytes passed in write requests */
25 unsigned int th_cnt; /* number of available threads */
26 unsigned int th_usage[10]; /* number of ticks during which n perdeciles
27 * of available threads were in use */
28 unsigned int th_fullcnt; /* number of times last free thread was used */
29 unsigned int ra_size; /* size of ra cache */
30 unsigned int ra_depth[11]; /* number of times ra entry was found that deep
31 * in the cache (10percentiles). [10] = not found */
Shankar Anande2b20952006-07-10 04:45:44 -070032#ifdef CONFIG_NFSD_V4
33 unsigned int nfs4_opcount[LAST_NFS4_OP + 1]; /* count of individual nfsv4 operations */
34#endif
35
Linus Torvalds1da177e2005-04-16 15:20:36 -070036};
37
38/* thread usage wraps very million seconds (approx one fortnight) */
39#define NFSD_USAGE_WRAP (HZ*1000000)
40
41#ifdef __KERNEL__
42
43extern struct nfsd_stats nfsdstats;
44extern struct svc_stat nfsd_svcstats;
45
46void nfsd_stat_init(void);
47void nfsd_stat_shutdown(void);
48
49#endif /* __KERNEL__ */
50#endif /* LINUX_NFSD_STATS_H */