linux-kernel - Re: blk-mq: refactor request allocation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 27 May 2014 14:58:08 -0600
From:	Jens Axboe <axboe@...com>
To:	Christoph Hellwig <hch@....de>
CC:	<linux-kernel@...r.kernel.org>
Subject: Re: blk-mq: refactor request allocation

On 05/27/2014 12:59 PM, Christoph Hellwig wrote:
> This series streamlines the request allocation path.
> 

Series looks innocuous enough to me, but it's about a 1.5% performance
drop here with an actual device. These tests are very stable, anything
over ~0.1% is definitely outside of noise. I repeated and rebooted a few
times and tested both, it's persistent. No smoking guns in the profile.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/