[PATCH 7/7] cxlflash: Increase cmd_per_lun for better throughput

Matthew R. Ochs mrochs at linux.vnet.ibm.com
Tue Mar 8 05:45:14 AEDT 2016


> On Mar 4, 2016, at 3:55 PM, Uma Krishnan <ukrishn at linux.vnet.ibm.com> wrote:
> 
> From: "Manoj N. Kumar" <manoj at linux.vnet.ibm.com>
> 
> 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 at linux.vnet.ibm.com>

Acked-by: Matthew R. Ochs <mrochs at linux.vnet.ibm.com>



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