* [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices
@ 2018-01-24 22:49 Michael Kelley (EOSG)
2018-01-31 3:06 ` Martin K. Petersen
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Michael Kelley (EOSG) @ 2018-01-24 22:49 UTC (permalink / raw)
To: KY Srinivasan, Stephen Hemminger, martin.petersen@oracle.com,
Long Li, jejb@linux.vnet.ibm.com, devel@linuxdriverproject.org,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Cc: Michael Kelley (EOSG)
Increase cmd_per_lun to allow more I/Os in progress per device,
particularly for NVMe's. The Hyper-V host side can handle the
higher count with no issues.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
---
drivers/scsi/storvsc_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index f3264c4..6205107 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1657,7 +1657,7 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
.eh_timed_out = storvsc_eh_timed_out,
.slave_alloc = storvsc_device_alloc,
.slave_configure = storvsc_device_configure,
- .cmd_per_lun = 255,
+ .cmd_per_lun = 2048,
.this_id = -1,
.use_clustering = ENABLE_CLUSTERING,
/* Make sure we dont get a sg segment crosses a page boundary */
--
1.8.3.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices
2018-01-24 22:49 [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices Michael Kelley (EOSG)
@ 2018-01-31 3:06 ` Martin K. Petersen
2018-01-31 18:34 ` KY Srinivasan
2018-02-07 0:39 ` Martin K. Petersen
2 siblings, 0 replies; 4+ messages in thread
From: Martin K. Petersen @ 2018-01-31 3:06 UTC (permalink / raw)
To: Michael Kelley (EOSG)
Cc: KY Srinivasan, Stephen Hemminger, martin.petersen@oracle.com,
Long Li, jejb@linux.vnet.ibm.com, devel@linuxdriverproject.org,
linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
> Increase cmd_per_lun to allow more I/Os in progress per device,
> particularly for NVMe's. The Hyper-V host side can handle the
> higher count with no issues.
Long/KY/Cathy/Stephen: Please ack/review Michael's patches.
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices
2018-01-24 22:49 [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices Michael Kelley (EOSG)
2018-01-31 3:06 ` Martin K. Petersen
@ 2018-01-31 18:34 ` KY Srinivasan
2018-02-07 0:39 ` Martin K. Petersen
2 siblings, 0 replies; 4+ messages in thread
From: KY Srinivasan @ 2018-01-31 18:34 UTC (permalink / raw)
To: Michael Kelley (EOSG), Stephen Hemminger,
martin.petersen@oracle.com, Long Li, jejb@linux.vnet.ibm.com,
devel@linuxdriverproject.org, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org
> -----Original Message-----
> From: Michael Kelley (EOSG)
> Sent: Wednesday, January 24, 2018 2:50 PM
> To: KY Srinivasan <kys@microsoft.com>; Stephen Hemminger
> <sthemmin@microsoft.com>; martin.petersen@oracle.com; Long Li
> <longli@microsoft.com>; jejb@linux.vnet.ibm.com;
> devel@linuxdriverproject.org; linux-kernel@vger.kernel.org; linux-
> scsi@vger.kernel.org
> Cc: Michael Kelley (EOSG) <Michael.H.Kelley@microsoft.com>
> Subject: [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed
> devices
>
> Increase cmd_per_lun to allow more I/Os in progress per device,
> particularly for NVMe's. The Hyper-V host side can handle the
> higher count with no issues.
>
> Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Thanks,
K. Y
> ---
> drivers/scsi/storvsc_drv.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
> index f3264c4..6205107 100644
> --- a/drivers/scsi/storvsc_drv.c
> +++ b/drivers/scsi/storvsc_drv.c
> @@ -1657,7 +1657,7 @@ static int storvsc_queuecommand(struct Scsi_Host
> *host, struct scsi_cmnd *scmnd)
> .eh_timed_out = storvsc_eh_timed_out,
> .slave_alloc = storvsc_device_alloc,
> .slave_configure = storvsc_device_configure,
> - .cmd_per_lun = 255,
> + .cmd_per_lun = 2048,
> .this_id = -1,
> .use_clustering = ENABLE_CLUSTERING,
> /* Make sure we dont get a sg segment crosses a page boundary */
> --
> 1.8.3.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices
2018-01-24 22:49 [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices Michael Kelley (EOSG)
2018-01-31 3:06 ` Martin K. Petersen
2018-01-31 18:34 ` KY Srinivasan
@ 2018-02-07 0:39 ` Martin K. Petersen
2 siblings, 0 replies; 4+ messages in thread
From: Martin K. Petersen @ 2018-02-07 0:39 UTC (permalink / raw)
To: Michael Kelley (EOSG)
Cc: jejb@linux.vnet.ibm.com, linux-scsi@vger.kernel.org,
martin.petersen@oracle.com, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, Stephen Hemminger
Michael,
> Increase cmd_per_lun to allow more I/Os in progress per device,
> particularly for NVMe's. The Hyper-V host side can handle the higher
> count with no issues.
Applied to 4.16/scsi-fixes. Thank you!
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 4+ messages in thread
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2018-01-24 22:49 [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher speed devices Michael Kelley (EOSG)
2018-01-31 3:06 ` Martin K. Petersen
2018-01-31 18:34 ` KY Srinivasan
2018-02-07 0:39 ` Martin K. Petersen
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