LXR linux/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 */
  52