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| author | Manoj N. Kumar <manoj@linux.vnet.ibm.com> | 2016-03-04 22:55:20 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-03-09 03:17:33 +0100 |
| commit | 83430833b4d4a9c9b23964babbeb1f36450f8136 (patch) | |
| tree | e0f8f15b8940c15c27642f9990a053cfa220953d /drivers/scsi/cxlflash/main.c | |
| parent | cxlflash: Fix to avoid unnecessary scan with internal LUNs (diff) | |
| download | linux-83430833b4d4a9c9b23964babbeb1f36450f8136.tar.xz linux-83430833b4d4a9c9b23964babbeb1f36450f8136.zip | |
cxlflash: Increase cmd_per_lun for better throughput
With the current value of cmd_per_lun at 16, the throughput
over a single adapter is limited to around 150kIOPS.
Increase the value of cmd_per_lun to 256 to improve
throughput. With this change a single adapter is able to
attain close to the maximum throughput (380kIOPS).
Also change the number of RRQ entries that can be queued.
Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/cxlflash/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index 0f062a4419ab..3879b46d79e1 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -2253,7 +2253,7 @@ static struct scsi_host_template driver_template = { .eh_device_reset_handler = cxlflash_eh_device_reset_handler, .eh_host_reset_handler = cxlflash_eh_host_reset_handler, .change_queue_depth = cxlflash_change_queue_depth, - .cmd_per_lun = 16, + .cmd_per_lun = CXLFLASH_MAX_CMDS_PER_LUN, .can_queue = CXLFLASH_MAX_CMDS, .this_id = -1, .sg_tablesize = SG_NONE, /* No scatter gather support */ |