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Illumos #3537

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3537 want pool io kstats

Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Reviewed by: Sa?o Kiselkov <skiselkov.ml@gmail.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Brendan Gregg <brendan.gregg@joyent.com>
Approved by: Gordon Ross <gwr@nexenta.com>

References:
  http://www.illumos.org/issues/3537
  illumos/illumos-gate@c3a6601

Ported by: Cyril Plisko <cyril.plisko@mountall.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

Porting Notes:

1. The patch was restructured to take advantage of the existing
   spa statistics infrastructure.  To accomplish this the kstat
   was moved in to spa->io_stats and the init/destroy code moved
   to spa_stats.c.

2. The I/O kstat was simply named <pool> which conflicted with the
   pool directory we had already created.  Therefore it was renamed
   to <pool>/io

3. An update handler was added to allow the kstat to be zeroed.
This commit is contained in:
Matthew Ahrens
2013-08-26 17:09:29 -07:00
committed by Brian Behlendorf
parent a117a6d66e
commit 330847ff36
5 changed files with 152 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/spa.h
+1
View File
@@ -550,6 +550,7 @@ typedef struct spa_stats {
spa_stats_history_t read_history;
spa_stats_history_t txg_history;
spa_stats_history_t tx_assign_histogram;
spa_stats_history_t io_history;
} spa_stats_t;
typedef enum txg_state {
include/sys/zfs_context.h
+8 -2
View File
@@ -344,10 +344,16 @@ extern void cv_broadcast(kcondvar_t *cv);
/*
* kstat creation, installation and deletion
*/
extern kstat_t *kstat_create(char *, int,
char *, char *, uchar_t, ulong_t, uchar_t);
extern kstat_t *kstat_create(const char *, int,
const char *, const char *, uchar_t, ulong_t, uchar_t);
extern void kstat_install(kstat_t *);
extern void kstat_delete(kstat_t *);
extern void kstat_waitq_enter(kstat_io_t *);
extern void kstat_waitq_exit(kstat_io_t *);
extern void kstat_runq_enter(kstat_io_t *);
extern void kstat_runq_exit(kstat_io_t *);
extern void kstat_waitq_to_runq(kstat_io_t *);
extern void kstat_runq_back_to_waitq(kstat_io_t *);
extern void kstat_set_raw_ops(kstat_t *ksp,
int (*headers)(char *buf, size_t size),
int (*data)(char *buf, size_t size, void *data),