[Bug 245779] Re: Server 8.04 LTS: soft lockup - CPU#1 stuck for 11s! [bond1:3795] - bond - bond0

[David McGiven]

Dear Ubuntu Users,

I'm hitting the same error/bug you are. My setup is the following :

- SunFire X4450 with 4 Intel Xeon 6-Core :
(Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz)

- Ubuntu 8.04 LTS :
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 8.04.4 LTS
Release:	8.04
Codename:	hardy

- Kernel version :
Linux xxxxx 2.6.24-27-server #1 SMP Wed Mar 24 11:32:39 UTC 2010 x86_64 GNU/Linux

- I'm running a 24 processors NAMD job
(http://www.ks.uiuc.edu/Research/namd/)

After less than 1 minute, the system becomes unresponsive for ~10
minutes and then it comes back to "normal" (no need to reboot if you are
patient enough).

Checking the dmesg buffer shows the already discussed "[ 2618.201092]
BUG: soft lockup - CPU#23 stuck for 11s! [events/23:98]"

I've also seen some messages regarding a RAID module :
[ 2625.160886] aacraid: Host adapter abort request (0,0,0,0)
[ 2625.161029] aacraid: Host adapter reset request. SCSI hang ?

But I don't know if they're very relevant because the software and the
data are accessed through NFS so it's not really writing to a local
disk.

Does this provide any help to solve the problem ? I can send more
detailed logs to the ubuntu LTS team if needed, this bug has to be
solved! it's been more than a year now.

-- 
Server 8.04 LTS: soft lockup - CPU#1 stuck for 11s! [bond1:3795] - bond - bond0
https://bugs.launchpad.net/bugs/245779
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