[SCSI] libsas: dynamic queue depth

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The queue-depth for libsas-attached devices initializes to 32 and can
only be increased manually via sysfs to a max of 64, while mpt2sas
attached devices initialize to 254 and dynamically float via the
midlayer ->change_queue_depth interface.

No performance regression was observed with this change on the isci
driver.

Tested-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

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Dan Williams 2011-09-20 15:10:46 -07:00 • committed by James Bottomley

parent f6e67035a9

commit 97a1420d12

1 changed files with 18 additions and 21 deletions

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37

drivers/scsi/libsas/sas_scsi_host.c

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