/include/linux/nfsd/stats.h

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