linux-ext4 - Re: Excessive stall times on ext4 in 3.9-rc2

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 for Android: free password hash cracker in your pocket

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

Date:	Fri, 5 Apr 2013 19:16:35 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	Mel Gorman <mgorman@...e.de>, linux-ext4@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: Re: Excessive stall times on ext4 in 3.9-rc2

On Sat, Apr 06, 2013 at 12:18:11AM +0200, Jiri Slaby wrote:
> Ok, so now I'm runnning 3.9.0-rc5-next-20130404, it's not that bad, but
> it still sucks. Updating a kernel in a VM still results in "Your system
> is too SLOW to play this!" by mplayer and frame dropping.

What was the first kernel where you didn't have the problem?  Were you
using the 3.8 kernel earlier, and did you see the interactivity
problems there?

What else was running in on your desktop at the same time?  How was
the file system mounted, and can you send me the output of dumpe2fs -h
/dev/XXX?  Oh, and what options were you using to when you kicked off
the VM?

The other thing that would be useful was to enable the jbd2_run_stats
tracepoint and to send the output of the trace log when you notice the
interactivity problems.

Thanks,

						- Ted
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html