From: Jiri Slaby <jslaby@suse.cz>
To: Mel Gorman <mgorman@suse.de>, "Theodore Ts'o" <tytso@mit.edu>
Cc: linux-ext4@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>
Subject: Re: Excessive stall times on ext4 in 3.9-rc2
Date: Sat, 06 Apr 2013 00:18:11 +0200 [thread overview]
Message-ID: <515F4DA3.2000000@suse.cz> (raw)
In-Reply-To: <20130403101925.GA7341@suse.de>
On 04/03/2013 12:19 PM, Mel Gorman wrote:
> On Tue, Apr 02, 2013 at 11:14:36AM -0400, Theodore Ts'o wrote:
>> On Tue, Apr 02, 2013 at 11:06:51AM -0400, Theodore Ts'o wrote:
>>>
>>> Can you try 3.9-rc4 or later and see if the problem still persists?
>>> There were a number of ext4 issues especially around low memory
>>> performance which weren't resolved until -rc4.
>>
>> Actually, sorry, I took a closer look and I'm not as sure going to
>> -rc4 is going to help (although we did have some ext4 patches to fix a
>> number of bugs that flowed in as late as -rc4).
>>
>
> I'm running with -rc5 now. I have not noticed much interactivity problems
> as such but the stall detection script reported that mutt stalled for
> 20 seconds opening an inbox and imapd blocked for 59 seconds doing path
> lookups, imaps blocked again for 12 seconds doing an atime update, an RSS
> reader blocked for 3.5 seconds writing a file. etc.
>
> There has been no reclaim activity in the system yet and 2G is still free
> so it's very unlikely to be a page or slab reclaim problem.
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.
3.5G out of 6G memory used, the rest is I/O cache.
I have 7200RPM disks in my desktop.
--
js
suse labs
WARNING: multiple messages have this Message-ID (diff)
From: Jiri Slaby <jslaby@suse.cz>
To: Mel Gorman <mgorman@suse.de>, Theodore Ts'o <tytso@mit.edu>
Cc: linux-ext4@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>
Subject: Re: Excessive stall times on ext4 in 3.9-rc2
Date: Sat, 06 Apr 2013 00:18:11 +0200 [thread overview]
Message-ID: <515F4DA3.2000000@suse.cz> (raw)
In-Reply-To: <20130403101925.GA7341@suse.de>
On 04/03/2013 12:19 PM, Mel Gorman wrote:
> On Tue, Apr 02, 2013 at 11:14:36AM -0400, Theodore Ts'o wrote:
>> On Tue, Apr 02, 2013 at 11:06:51AM -0400, Theodore Ts'o wrote:
>>>
>>> Can you try 3.9-rc4 or later and see if the problem still persists?
>>> There were a number of ext4 issues especially around low memory
>>> performance which weren't resolved until -rc4.
>>
>> Actually, sorry, I took a closer look and I'm not as sure going to
>> -rc4 is going to help (although we did have some ext4 patches to fix a
>> number of bugs that flowed in as late as -rc4).
>>
>
> I'm running with -rc5 now. I have not noticed much interactivity problems
> as such but the stall detection script reported that mutt stalled for
> 20 seconds opening an inbox and imapd blocked for 59 seconds doing path
> lookups, imaps blocked again for 12 seconds doing an atime update, an RSS
> reader blocked for 3.5 seconds writing a file. etc.
>
> There has been no reclaim activity in the system yet and 2G is still free
> so it's very unlikely to be a page or slab reclaim problem.
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.
3.5G out of 6G memory used, the rest is I/O cache.
I have 7200RPM disks in my desktop.
--
js
suse labs
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next prev parent reply other threads:[~2013-04-05 22:18 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-02 14:27 Excessive stall times on ext4 in 3.9-rc2 Mel Gorman
2013-04-02 14:27 ` Mel Gorman
2013-04-02 15:00 ` Jiri Slaby
2013-04-02 15:00 ` Jiri Slaby
2013-04-02 15:03 ` Zheng Liu
2013-04-02 15:03 ` Zheng Liu
2013-04-02 15:15 ` Mel Gorman
2013-04-02 15:15 ` Mel Gorman
2013-04-02 15:06 ` Theodore Ts'o
2013-04-02 15:06 ` Theodore Ts'o
2013-04-02 15:14 ` Theodore Ts'o
2013-04-02 15:14 ` Theodore Ts'o
2013-04-02 18:19 ` Theodore Ts'o
2013-04-02 18:19 ` Theodore Ts'o
2013-04-07 21:59 ` Frank Ch. Eigler
2013-04-07 21:59 ` Frank Ch. Eigler
2013-04-08 8:36 ` Mel Gorman
2013-04-08 8:36 ` Mel Gorman
2013-04-08 10:52 ` Frank Ch. Eigler
2013-04-08 10:52 ` Frank Ch. Eigler
2013-04-08 11:01 ` Theodore Ts'o
2013-04-08 11:01 ` Theodore Ts'o
2013-04-03 10:19 ` Mel Gorman
2013-04-03 10:19 ` Mel Gorman
2013-04-03 12:05 ` Theodore Ts'o
2013-04-03 12:05 ` Theodore Ts'o
2013-04-03 15:15 ` Mel Gorman
2013-04-05 22:18 ` Jiri Slaby [this message]
2013-04-05 22:18 ` Jiri Slaby
2013-04-05 23:16 ` Theodore Ts'o
2013-04-05 23:16 ` Theodore Ts'o
2013-04-06 7:29 ` Jiri Slaby
2013-04-06 7:29 ` Jiri Slaby
2013-04-06 7:37 ` Jiri Slaby
2013-04-06 7:37 ` Jiri Slaby
2013-04-06 8:19 ` Jiri Slaby
2013-04-06 13:15 ` Theodore Ts'o
2013-04-06 13:15 ` Theodore Ts'o
2013-04-10 10:56 ` Mel Gorman
2013-04-10 10:56 ` Mel Gorman
2013-04-10 13:12 ` Theodore Ts'o
2013-04-10 13:12 ` Theodore Ts'o
2013-04-11 17:04 ` Mel Gorman
2013-04-11 17:04 ` Mel Gorman
2013-04-11 18:35 ` Theodore Ts'o
2013-04-11 18:35 ` Theodore Ts'o
2013-04-11 21:33 ` Jan Kara
2013-04-11 21:33 ` Jan Kara
2013-04-12 2:57 ` Theodore Ts'o
2013-04-12 2:57 ` Theodore Ts'o
2013-04-12 4:50 ` Dave Chinner
2013-04-12 4:50 ` Dave Chinner
2013-04-12 15:19 ` Theodore Ts'o
2013-04-12 15:19 ` Theodore Ts'o
2013-04-13 1:23 ` Dave Chinner
2013-04-13 1:23 ` Dave Chinner
2013-04-22 14:38 ` Mel Gorman
2013-04-22 14:38 ` Mel Gorman
2013-04-22 22:42 ` Jeff Moyer
2013-04-22 22:42 ` Jeff Moyer
2013-04-23 0:02 ` Theodore Ts'o
2013-04-23 0:02 ` Theodore Ts'o
2013-04-23 9:31 ` Jan Kara
2013-04-23 9:31 ` Jan Kara
2013-04-23 14:01 ` Mel Gorman
2013-04-23 14:01 ` Mel Gorman
2013-04-24 19:09 ` Jeff Moyer
2013-04-24 19:09 ` Jeff Moyer
2013-04-25 12:21 ` Mel Gorman
2013-04-25 12:21 ` Mel Gorman
2013-04-12 9:47 ` Mel Gorman
2013-04-12 9:47 ` Mel Gorman
2013-04-21 0:05 ` Theodore Ts'o
2013-04-21 0:05 ` Theodore Ts'o
2013-04-21 0:07 ` [PATCH 1/3] ext4: mark all metadata I/O with REQ_META Theodore Ts'o
2013-04-21 0:07 ` Theodore Ts'o
2013-04-21 0:07 ` [PATCH 2/3] buffer: add BH_Prio and BH_Meta flags Theodore Ts'o
2013-04-21 0:07 ` Theodore Ts'o
2013-04-21 0:07 ` [PATCH 3/3] ext4: mark metadata blocks using bh flags Theodore Ts'o
2013-04-21 0:07 ` Theodore Ts'o
2013-04-21 6:09 ` Jiri Slaby
2013-04-21 6:09 ` Jiri Slaby
2013-04-21 6:09 ` Jiri Slaby
2013-04-21 19:55 ` Theodore Ts'o
2013-04-21 19:55 ` Theodore Ts'o
2013-04-21 19:55 ` Theodore Ts'o
2013-04-21 20:48 ` [PATCH 3/3 -v2] " Theodore Ts'o
2013-04-21 20:48 ` Theodore Ts'o
2013-04-21 20:48 ` Theodore Ts'o
2013-04-22 12:06 ` [PATCH 1/3] ext4: mark all metadata I/O with REQ_META Zheng Liu
2013-04-22 12:06 ` Zheng Liu
2013-04-23 15:33 ` Excessive stall times on ext4 in 3.9-rc2 Mel Gorman
2013-04-23 15:33 ` Mel Gorman
2013-04-23 15:50 ` Theodore Ts'o
2013-04-23 15:50 ` Theodore Ts'o
2013-04-23 16:13 ` Mel Gorman
2013-04-23 16:13 ` Mel Gorman
2013-04-12 10:18 ` Tvrtko Ursulin
2013-04-12 10:18 ` Tvrtko Ursulin
2013-04-12 9:45 ` Mel Gorman
2013-04-12 9:45 ` Mel Gorman
2013-04-02 23:16 ` Theodore Ts'o
2013-04-02 23:16 ` Theodore Ts'o
2013-04-03 15:22 ` Mel Gorman
2013-04-03 15:22 ` Mel Gorman
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