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20ad856e47
Collect some nfsd stats per export in addition to the global stats. A new nfsdfs export_stats file is created. It uses the same ops as the exports file to iterate the export entries and we use the file's name to determine the reported info per export. For example: $ cat /proc/fs/nfsd/export_stats # Version 1.1 # Path Client Start-time # Stats /test localhost 92 fh_stale: 0 io_read: 9 io_write: 1 Every export entry reports the start time when stats collection started, so stats collecting scripts can know if stats where reset between samples. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Statistics for NFS server.
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef _NFSD_STATS_H
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#define _NFSD_STATS_H
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#include <uapi/linux/nfsd/stats.h>
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#include <linux/percpu_counter.h>
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enum {
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NFSD_STATS_RC_HITS, /* repcache hits */
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NFSD_STATS_RC_MISSES, /* repcache misses */
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NFSD_STATS_RC_NOCACHE, /* uncached reqs */
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NFSD_STATS_FH_STALE, /* FH stale error */
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NFSD_STATS_IO_READ, /* bytes returned to read requests */
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NFSD_STATS_IO_WRITE, /* bytes passed in write requests */
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#ifdef CONFIG_NFSD_V4
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NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */
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NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP,
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#define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op))
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#endif
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NFSD_STATS_COUNTERS_NUM
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};
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struct nfsd_stats {
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struct percpu_counter counter[NFSD_STATS_COUNTERS_NUM];
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/* Protected by nfsd_mutex */
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unsigned int th_cnt; /* number of available threads */
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};
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extern struct nfsd_stats nfsdstats;
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extern struct svc_stat nfsd_svcstats;
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int nfsd_percpu_counters_init(struct percpu_counter counters[], int num);
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void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num);
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void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num);
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int nfsd_stat_init(void);
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void nfsd_stat_shutdown(void);
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static inline void nfsd_stats_rc_hits_inc(void)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_HITS]);
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}
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static inline void nfsd_stats_rc_misses_inc(void)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_MISSES]);
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}
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static inline void nfsd_stats_rc_nocache_inc(void)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]);
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}
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static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp)
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{
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percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_FH_STALE]);
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if (exp)
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percpu_counter_inc(&exp->ex_stats.counter[EXP_STATS_FH_STALE]);
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}
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static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount)
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{
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percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_READ], amount);
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if (exp)
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percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_READ], amount);
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}
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static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount)
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{
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percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_WRITE], amount);
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if (exp)
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percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_WRITE], amount);
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}
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static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
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{
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percpu_counter_inc(&nn->counter[NFSD_NET_PAYLOAD_MISSES]);
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}
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static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
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{
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percpu_counter_add(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
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}
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static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
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{
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percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
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}
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#endif /* _NFSD_STATS_H */
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