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Run arc_evict thread at higher priority

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Run arc_evict thread at higher priority, nice=0, to give it more CPU
time which can improve performance for workload with high ARC evict
activities.

On mixed read/write and sequential read workloads, I've seen between
10-40% better performance.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Tony Nguyen <tony.nguyen@delphix.com>
Closes #12397
This commit is contained in:
Tony Nguyen
2021-08-10 11:36:26 -06:00
committed by GitHub
parent f3678d70ff
commit 6bc61d22c4
5 changed files with 22 additions and 15 deletions
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module/zfs/vdev_indirect.c
+1 -1
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@@ -885,7 +885,7 @@ spa_start_indirect_condensing_thread(spa_t *spa)
ASSERT3P(spa->spa_condense_zthr, ==, NULL);
spa->spa_condense_zthr = zthr_create("z_indirect_condense",
spa_condense_indirect_thread_check,
spa_condense_indirect_thread, spa);
spa_condense_indirect_thread, spa, minclsyspri);
}
/*