diff options
| author | Sumit Saxena <sumit.saxena@broadcom.com> | 2022-04-14 06:36:01 -0400 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-04-18 23:02:47 -0400 |
| commit | f9bdac31cf4b8609c1b241749b0ceb8f67c8685b (patch) | |
| tree | fac67d90750a8d06a1237ac19c461583685af7e2 | |
| parent | 65db22e505c4f3d13f588775844074bee5e93163 (diff) | |
| download | linux-f9bdac31cf4b8609c1b241749b0ceb8f67c8685b.tar.bz2 | |
scsi: core: Increase max device queue_depth to 4096
The maximum SCSI device queue depth of 1024 is not sufficient for RAID
volumes configured behind Broadcom RAID controllers. For a 16-drive RAID
volume with a device queue depth limit of 1024, only 64 I/Os (1024/16) can
be issued per drive. That is not sufficient to saturate the device.
Link: https://lore.kernel.org/r/20220414103601.140687-1-sumit.saxena@broadcom.com
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Sumanesh Samanta <sumanesh.samanta@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/scsi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 211aace69c22..735b6c862b46 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -200,11 +200,11 @@ void scsi_finish_command(struct scsi_cmnd *cmd) /* - * 1024 is big enough for saturating fast SCSI LUNs. + * 4096 is big enough for saturating fast SCSI LUNs. */ int scsi_device_max_queue_depth(struct scsi_device *sdev) { - return min_t(int, sdev->host->can_queue, 1024); + return min_t(int, sdev->host->can_queue, 4096); } /** |