linux-kernel - Re: System freezes with high network activity

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Message-ID: <CAJPugqur-7=s2ujsy+XhAZ3TucD_R_Wcdat2NA9TdFNrhSA2ww@mail.gmail.com>
Date:	Sat, 3 Dec 2011 23:04:41 +0100
From:	Jose Luis Salas <josacar@...il.com>
To:	john stultz <johnstul@...ibm.com>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Jonathan Nieder <jrnieder@...il.com>
Subject: Re: System freezes with high network activity

Hi,

attached is the output of the timer_list.

With the nohz option the system is stable too.

Other symptom of the problem is network drops performance to 50% ( 50 Mbps ).

Thanks again.

On Fri, Dec 2, 2011 at 11:28 PM, john stultz <johnstul@...ibm.com> wrote:
> On Fri, 2011-12-02 at 21:54 +0100, Jose Luis Salas wrote:
>> Hi,
>>
>> attached is the dmesg without the clocksource option.
>
> Thanks. After your done testing nohz=off, could you also
> send /proc/timer_list output from the system with no clocksource option,
> and no nohz options?
>
>
>> the nohz=off *seems* to avoid the problem, I'm testing with NFS and Iperf now.
>
> Sounds good. Let us know how the testing goes.
>
> thanks
> -john
>
>

View attachment "timer_list.txt" of type "text/plain" (8315 bytes)