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authorDan Williams <dan.j.williams@intel.com>2011-09-21 00:10:46 +0200
committerJames Bottomley <JBottomley@Parallels.com>2011-10-02 19:36:43 +0200
commit97a1420d127ca1db2fd665707bf4e9501758147c (patch)
tree4d89c37ee1e55ec98b733bc968a0896c0a1985e8 /drivers/scsi/mvsas
parent[SCSI] libsas,libata: fix ->change_queue_{depth|type} for sata devices (diff)
downloadlinux-97a1420d127ca1db2fd665707bf4e9501758147c.tar.xz
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[SCSI] libsas: dynamic queue depth
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>
Diffstat (limited to 'drivers/scsi/mvsas')
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