[PATCH v2 03/11] megaraid_sas: Update optimal queue depth for SAS and NVMe devices

Anand Lodnoor
2020-01-14T11:22:31Z

Ideally, optimal queue depth will be provided by firmware.
The driver defines will be used as a fallback mechanism, in case the FW
assisted QD is not supported.
The driver defined values provide optimal queue depth for most of the
drives and the workloads, as is learned from the firmware assisted QD
results.

Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Anand Lodnoor <anand.lodnoor@broadcom.com>
---
drivers/scsi/megaraid/megaraid_sas.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index bd81840..ddfbe6f 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2233,9 +2233,9 @@ enum MR_PD_TYPE {

/* JBOD Queue depth definitions */
#define MEGASAS_SATA_QD 32
-#define MEGASAS_SAS_QD 64
+#define MEGASAS_SAS_QD 256
#define MEGASAS_DEFAULT_PD_QD 64
-#define MEGASAS_NVME_QD 32
+#define MEGASAS_NVME_QD 64

#define MR_DEFAULT_NVME_PAGE_SIZE 4096
#define MR_DEFAULT_NVME_PAGE_SHIFT 12
--
1.8.3.1