- Setting coalescing has a significant negative
impact on low queue-depth performance.
- Does not help high queue-depth performance.
Reviewed-by: Scott Benesh <scott.ben...@microsemi.com>
Reviewed-by: Scott Teel <scott.t...@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barn...@microsemi.com>
Signed-off-by: Don Brace <don.br...@microsemi.com>
---
drivers/scsi/hpsa.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 9fb739c..810c300 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -9277,13 +9277,9 @@ static int hpsa_enter_performant_mode(struct ctlr_info
*h, u32 trans_support)
access = SA5_ioaccel_mode1_access;
writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
writel(4, &h->cfgtable->HostWrite.CoalIntCount);
- } else {
- if (trans_support & CFGTBL_Trans_io_accel2) {
+ } else
+ if (trans_support & CFGTBL_Trans_io_accel2)
access = SA5_ioaccel_mode2_access;
- writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
- writel(4, &h->cfgtable->HostWrite.CoalIntCount);
- }
- }
writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
if (hpsa_wait_for_mode_change_ack(h)) {
dev_err(&h->pdev->dev,
--
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