linux-kernel - Re: [PATCH][v2] cfq-iosched: Add additional blktrace log messages in CFQ for easier debugging.

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] [day] [month] [year] [list]

Message-ID: <20100325144418.GV5768@kernel.dk>
Date:	Thu, 25 Mar 2010 15:44:18 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Divyesh Shah <dpshah@...gle.com>
Cc:	linux-kernel@...r.kernel.org, nauman@...gle.com, vgoyal@...hat.com,
	ctalbott@...gle.com
Subject: Re: [PATCH][v2] cfq-iosched: Add additional blktrace log messages
	in CFQ  for easier debugging.

On Wed, Mar 24 2010, Divyesh Shah wrote:
> These have helped us debug some issues we've noticed in earlier IO
> controller versions and should be useful now as well. The extra logging
> covers:
> - idling behavior. Since there are so many conditions based on which we decide
> to idle or not, this patch adds a log message for some conditions that we've
> found useful.
> - workload slices and current prio and workload type
> 
> Changelog from v1:
> o moved log message from cfq_set_active_queue() to __cfq_set_active_queue()
> o changed queue_count to st->count

Definitely makes sense, thanks I'll queue it up.

-- 
Jens Axboe

--
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/