Re: 2.6.16-rc[1-5]: soft lockups on Athlon64 X2

[Max Kellermann <max@duempel.org>]

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

     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: trigger_soft_lockup.sh
Description: Bourne shell script