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Increate zio write interrupt thread count.

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Increasing the default zio_wr_int thread count from 8 to 16 improves
write performence by 13% on large systems.  More testing need to be
done but I suspect the ideal tuning here is ZTI_BATCH() with a minimum
of 8 threads.
This commit is contained in:
Brian Behlendorf 2010-10-28 10:42:38 -07:00
parent 451041db53
commit 7e55f4e00c
1 changed files with 1 additions and 1 deletions
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module/zfs/spa.c
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@ -106,7 +106,7 @@ const zio_taskq_info_t zio_taskqs[ZIO_TYPES][ZIO_TASKQ_TYPES] = {
/* ISSUE ISSUE_HIGH INTR INTR_HIGH */
{ ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL },
{ ZTI_FIX(8), ZTI_NULL, ZTI_BATCH, ZTI_NULL },
{ ZTI_BATCH, ZTI_FIX(5), ZTI_FIX(8), ZTI_FIX(5) },
{ ZTI_BATCH, ZTI_FIX(5), ZTI_FIX(16), ZTI_FIX(5) },
{ ZTI_FIX(100), ZTI_NULL, ZTI_ONE, ZTI_NULL },
{ ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL },
{ ZTI_ONE, ZTI_NULL, ZTI_ONE, ZTI_NULL },