From: Max Kellermann <max@duempel.org>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.16-rc[1-5]: soft lockups on Athlon64 X2
Date: Wed, 1 Mar 2006 23:23:05 +0100 [thread overview]
Message-ID: <20060301222305.GA12138@roonstrasse.net> (raw)
In-Reply-To: <20060301022235.51f47b42.akpm@osdl.org>
[-- Attachment #1: Type: text/plain, Size: 616 bytes --]
On 2006/03/01 11:22, Andrew Morton <akpm@osdl.org> wrote:
> I guess it'd be useful to see where all that time is spent, if you have
> time. Enable CONFIG_PROFILING, boot with `profile=1', do:
>
> readprofile -r
> mount ...
> readprofile -n -v -m /boot/System.map | sort -n -k 3 | tail -40
Here it is. As an explanation of the profile's scope, I have also
sent the shell script which reproduces the problem on my machine.
The script however is not 100% reliable; sometimes, the lockup just
won't occur. Sounds like a timing problem to me.
btw. my other partitions are also reiserfs (but not encrypted).
Max
[-- Attachment #2: profile --]
[-- Type: text/plain, Size: 1719 bytes --]
0 *unknown*
ffffffff81030f20 do_syslog 1 0.0009
ffffffff81041cc0 __queue_work 1 0.0078
ffffffff81054540 find_get_page 1 0.0104
ffffffff81062db0 __handle_mm_fault 1 0.0004
ffffffff8107a450 __getblk 1 0.0017
ffffffff811fce50 xor_128 1 0.0312
ffffffff811fd140 cbc_process_decrypt 1 0.0035
ffffffff8122ec60 strncpy_from_user 1 0.0125
ffffffff812dc9b0 scsi_dispatch_cmd 1 0.0014
ffffffff8101c120 do_gettimeoffset_pm 2 0.0417
ffffffff8101eee1 enc128 2 0.0010
ffffffff810910b0 get_filesystem_list 2 0.0139
ffffffff8122e990 memset 3 0.0156
ffffffff8105c4b0 __pagevec_lru_add_active 12 0.0500
ffffffff8105c790 __pagevec_release 108 1.6875
ffffffff8105c2c0 pagevec_lookup 112 2.3333
ffffffff8105c6d0 lru_add_drain 144 1.5000
ffffffff8105d100 invalidate_mapping_pages 411 1.2844
ffffffff8105c2f0 release_pages 551 1.2299
ffffffff810096e0 default_idle 4194 37.4464
ffffffff810c9b50 reiserfs_dirty_inode 23849 165.6181
ffffffff810545a0 find_get_pages 24892 172.8611
0000000000000000 total 54291 0.0100
[-- Attachment #3: trigger_soft_lockup.sh --]
[-- Type: application/x-sh, Size: 515 bytes --]
prev parent reply other threads:[~2006-03-01 22:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-27 12:27 2.6.16-rc[1-5]: soft lockups on Athlon64 X2 Max Kellermann
2006-03-01 6:19 ` Andrew Morton
2006-03-01 10:07 ` Max Kellermann
2006-03-01 10:22 ` Andrew Morton
2006-03-01 22:23 ` Max Kellermann [this message]
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