scsi: megaraid_sas: Update optimal queue depth for SAS and NVMe devices

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.

Link: https://lore.kernel.org/r/1579000882-20246-4-git-send-email-anand.lodnoor@broadcom.com
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Anand Lodnoor <anand.lodnoor@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index bd81840..ddfbe6f 100644 (file)
--- 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