diff options
| author | Brian Behlendorf <[email protected]> | 2012-10-23 13:48:22 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2012-11-02 15:45:56 -0700 |
| commit | e95853a331529a6cb96fdf10476c53441e59f4e1 (patch) | |
| tree | 30f0809324bb570d1e97ccbee054f1f0484d4668 /include/sys/dsl_pool.h | |
| parent | e8fd45a0f975c6b8ae8cd644714fc21f14fac2bf (diff) | |
Add txgs-<pool> kstat file
Create a kstat file which contains useful statistics about the
last N txgs processed. This can be helpful when analyzing pool
performance. The new KSTAT_TYPE_TXG type was added for this
purpose and it tracks the following statistics per-txg.
txg - Unique txg number
state - State (O)pen/(Q)uiescing/(S)yncing/(C)ommitted
birth; - Creation time
nread - Bytes read
nwritten; - Bytes written
reads - IOPs read
writes - IOPs write
open_time; - Length in nanoseconds the txg was open
quiesce_time - Length in nanoseconds the txg was quiescing
sync_time; - Length in nanoseconds the txg was syncing
Signed-off-by: Brian Behlendorf <[email protected]>
Diffstat (limited to 'include/sys/dsl_pool.h')
| -rw-r--r-- | include/sys/dsl_pool.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/sys/dsl_pool.h b/include/sys/dsl_pool.h index 99a131eec..40e96101d 100644 --- a/include/sys/dsl_pool.h +++ b/include/sys/dsl_pool.h @@ -65,6 +65,13 @@ typedef struct zfs_all_blkstats { zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1]; } zfs_all_blkstats_t; +typedef struct txg_history { + kstat_txg_t th_kstat; + vdev_stat_t th_vs1; + vdev_stat_t th_vs2; + kmutex_t th_lock; + list_node_t th_link; +} txg_history_t; typedef struct dsl_pool { /* Immutable */ @@ -76,6 +83,7 @@ typedef struct dsl_pool { struct dsl_dataset *dp_origin_snap; uint64_t dp_root_dir_obj; struct taskq *dp_iput_taskq; + kstat_t *dp_txg_kstat; /* No lock needed - sync context only */ blkptr_t dp_meta_rootbp; @@ -92,6 +100,9 @@ typedef struct dsl_pool { kmutex_t dp_lock; uint64_t dp_space_towrite[TXG_SIZE]; uint64_t dp_tempreserved[TXG_SIZE]; + uint64_t dp_txg_history_size; + list_t dp_txg_history; + /* Has its own locking */ tx_state_t dp_tx; @@ -144,6 +155,10 @@ extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj, extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp); int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **); +txg_history_t *dsl_pool_txg_history_add(dsl_pool_t *dp, uint64_t txg); +txg_history_t *dsl_pool_txg_history_get(dsl_pool_t *dp, uint64_t txg); +void dsl_pool_txg_history_put(txg_history_t *th); + #ifdef __cplusplus } #endif |