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October 2011

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From:
carlopmart <[log in to unmask]>
Reply To:
carlopmart <[log in to unmask]>
Date:
Tue, 4 Oct 2011 18:16:37 +0200
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On 10/04/2011 06:08 PM, Florian Philipp wrote:
> Am 04.10.2011 17:54, schrieb Florian Philipp:
>> Am 03.10.2011 12:50, schrieb carlopmart:
>>> Hi all,
>>>
>>>   I have installed two SL6.1 (fully patched) hosts with cman+rgmanager
>>> suite for HA services. When both nodes starts, this error is displayed:
>>>
>>>   "NOHZ: local_softirq_pending 08"
>>>
>>>   What does it means?? I have another pair of RHEL6.1 hosts with
>>> cman+rgmanager and this error doesn't appears ...
>>>
>>>   All hosts are installed under ESXi 5.
>>>
>>>   Thanks
>>>
>>
>> I've traced the piece of kernel code which causes this warning through
>> various revisions. It seems to be an old unresolved kernel bug triggered
>> on various machines.
>>
>> Originally it was introduced as a bug assertion in [1]. Then it became a
>> warning in [2] in order to provide better debugging. Finally, in [3] it
>> was rate limited to stop it from filling up the kernel logs.
>>
>> I suggest you either look for discussions of this bug on the linux
>> kernel mailing list or contact Thomas Gleixner (who provided these
>> patches) directly. His email address is listed in those commits.
>>
>> [1]
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=79bf2bb335b85db25d27421c798595a2fa2a0e82
>>
>> [2]
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=bc5393a6c9c0e70b4b43fb2fb63e3315e9a15c8f
>>
>> [3]
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=352823160613b65fdaa558be486720a71f75ed86
>>
>> Regards,
>> Florian Philipp
>>
>
> FWIW, check out this discussion and patch. It seems it was never applied
> to the main sources.
> https://lkml.org/lkml/2007/5/22/35
>

Many thanks Florian. Error seems to be displayed when vmxnet3 is used. 
If I use another one like e1000, warning is not displayed. Strange ...,

-- 
CL Martinez
carlopmart {at} gmail {d0t} com

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