On 06/19, Christoph Hellwig wrote:
>On Mon, Jun 19, 2017 at 03:49:43PM +0800, Ye Xiaolong wrote:
>> On 06/19, Christoph Hellwig wrote:
>> >On Mon, Jun 19, 2017 at 02:03:18PM +0800, kernel test robot wrote:
>> >> Greeting,
>> >> FYI, we noticed a -4% regression of fio.write_bw_MBps due to commit:
>> >What does cat /sys/block/<device>/queue/scheduler say for your test?
>> >Can you try with mq-deadline or bfq and see what the results are?
>> Could you tell me how to do it? via changing kernel config?
>BFQ doesn't seem to be enabled in the config, so it would have to be
>I've not seen a compile-time option for the MQ I/O scheduler (unlike
>the legacy one), so the way to change it would be to echo the name to
echo mq-deadline > /sys/block/<device>/queue/scheduler ?
I'll try and post the results once I get it.