Re: Performance regression in IO scheduler still there

Jeff Moyer
2009-11-12T21:06:40Z

Jens Axboe <jens.axboe@oracle.com> 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?

Cheers,
Jeff