[ofa-general] RE: [Scst-devel] SRP aggregate bandwidth decreasing as threads increase

Chris Worley worleys at gmail.com
Mon May 18 13:46:55 PDT 2009


On Mon, May 18, 2009 at 1:55 PM, Bart Van Assche
<bart.vanassche at gmail.com> wrote:
> On Mon, May 18, 2009 at 9:41 PM, Chris Worley <worleys at gmail.com> wrote:
>> On Mon, May 18, 2009 at 1:18 PM, Bart Van Assche
>> <bart.vanassche at gmail.com> wrote:
>>> Which I/O scheduler has been configured on the target, and with which
>>> parameters ? As you probably know, you can find these parameters under
>>> /sys/class/block/sda/queue/{*,*/*}. Are you using scst_disk or
>>> scst_vdisk ?
>>
>> scst_vdisk.
>
> The default number of kernel threads for scst_vdisk is five (kernel
> module parameter num_threads). It might be interesting to experiment
> with this parameter.

Thanks!  I'll try that too.

Chris



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