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Speed up zvol import and export speed

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Speed up import and export speed by:

* Add system delay taskq
* Parallel prefetch zvol dnodes during zvol_create_minors
* Parallel zvol_free during zvol_remove_minors
* Reduce list linear search using ida and hash

Reviewed-by: Boris Protopopov <boris.protopopov@actifio.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Closes #5433
This commit is contained in:
Brian Behlendorf
2016-12-08 14:05:02 -07:00
committed by GitHub
parent 27f2b90d3e 899662e344
commit f95e647891
8 changed files with 205 additions and 90 deletions
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module/zfs/spa.c
+4 -4
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@@ -1208,7 +1208,7 @@ spa_deactivate(spa_t *spa)
list_destroy(&spa->spa_evicting_os_list);
list_destroy(&spa->spa_state_dirty_list);
taskq_cancel_id(system_taskq, spa->spa_deadman_tqid);
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
for (t = 0; t < ZIO_TYPES; t++) {
for (q = 0; q < ZIO_TASKQ_TYPES; q++) {
@@ -6515,8 +6515,8 @@ spa_sync(spa_t *spa, uint64_t txg)
tx = dmu_tx_create_assigned(dp, txg);
spa->spa_sync_starttime = gethrtime();
taskq_cancel_id(system_taskq, spa->spa_deadman_tqid);
spa->spa_deadman_tqid = taskq_dispatch_delay(system_taskq,
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
spa->spa_deadman_tqid = taskq_dispatch_delay(system_delay_taskq,
spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() +
NSEC_TO_TICK(spa->spa_deadman_synctime));
@@ -6704,7 +6704,7 @@ spa_sync(spa_t *spa, uint64_t txg)
}
dmu_tx_commit(tx);
taskq_cancel_id(system_taskq, spa->spa_deadman_tqid);
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
spa->spa_deadman_tqid = 0;
/*