Re: Performance regression in IO scheduler still there

[Jens Axboe]

On Thu, Nov 12 2009, Jeff Moyer wrote:
> Jens Axboe <jens.axboe@xxxxxxxxxx> writes:
> 
> > On Thu, Nov 12 2009, Jeff Moyer wrote:
> >> Good question.  ;-)  I grep for NCQ in dmesg output and make sure it's
> >> greater than 0/32.  There may be a better way, though.
> >
> > cat /sys/block/<dev>/device/queue_depth
> >
> > :-)
> 
> OK, your comment about only working for SCSI disks threw me off.
> Perhaps you meant only works for devices that use the sd driver?

Yeah, only works for storage that plugs into the SCSI stack.

-- 
Jens Axboe

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