Commit 763a18cb authored Mar 23, 2020 by Dick Kennedy Committed by Martin K. Petersen Mar 29, 2020

scsi: lpfc: Change default SCSI LUN QD to 64

The default lun queue depth by the driver has been 30 for many years.
However, this value, when used with more recent hardware, has actually
throttled some tests that concentrate io on a lun.

Increase the default lun queue depth to 64.

Queue full handling, reported by the target, remains in effect and
unchanged.

Link: https://lore.kernel.org/r/20200323161935.40341-1-jsmart2021@gmail.com


Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent c6e085c8

drivers/scsi/lpfc/lpfc_attr.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -3805,9 +3805,9 @@ LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,

		/*
		# lun_queue_depth: This parameter is used to limit the number of outstanding
		# commands per FCP LUN. Value range is [1,512]. Default value is 30.
		# commands per FCP LUN.
		*/
		LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
		LPFC_VPORT_ATTR_R(lun_queue_depth, 64, 1, 512,
		"Max number of FCP commands we can queue to a specific LUN");

		/*

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