Re: [stable-4.14 00/23] block/scsi multiqueue performance enhancement and

On 7/23/18 9:00 AM, Jack Wang wrote:

Hi Greg,

Thanks for quick reply. Please see reply inline.



Greg KH [off-list ref] 于2018年7月23日周一 下午3:34写道：

quoted

On Mon, Jul 23, 2018 at 03:24:22PM +0200, Jack Wang wrote:

quoted

Hi Greg,

Please consider this patchset, which include block/scsi multiqueue performance
enhancement and bugfix.

What exactly is the performance enhancement?  How can you measure it?
How did you measure it?

I'm testing on SRP/IBNBD using fio, I've seen +10% with mix IO load,
and 50% improvement on small IO (bs=512.) with the patchset.

Big nak on backporting this huge series, it's a lot of core changes.
It's way beyond the scope of a stable fix backport.

-- 
Jens Axboe