Re: [lkp-robot] [scsi] ebc76736f2: fio.write_bw_MBps -4% regression

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On Tue, Jun 20, 2017 at 10:16:36AM +0800, Ye Xiaolong wrote:
> Hi, Christoph
> 
> On 06/19, Christoph Hellwig wrote:
> >On Mon, Jun 19, 2017 at 04:52:36PM +0800, Ye Xiaolong wrote:
> >> >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
> >> >/sys/block/<device>/queue/scheduler 
> >> 
> >> echo mq-deadline > /sys/block/<device>/queue/scheduler ?
> >> 
> >> I'll try and post the results once I get it.
> >
> >Thanks!
> 
> I've re-run the test and cat /sys/block/sda/queue/scheduler and
> /sys/block/sda/queue/scheduler, and both showed "[mq-deadline] kyber none",
> Does it mean they have already set as 'mq-deadline'?

Yes, it seems like you're already using mq-deadline, but bfq isn't even
available.



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