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RE: [Xen-devel] Re: new netfront and occasional receive path lockup

To: Gerald Turner <gturner@xxxxxxxxxx>
Subject: RE: [Xen-devel] Re: new netfront and occasional receive path lockup
From: "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx>
Date: Tue, 14 Sep 2010 08:26:21 +0800
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Thread-topic: [Xen-devel] Re: new netfront and occasional receive path lockup
Gerald Turner wrote:
> Gerald Turner <gturner@xxxxxxxxxx> writes:
>> "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx> writes:
>>> Thanks for your detail information.
>>> Unfortunately I don't have such platform that could launch more
>>> than 10 guests in hand. 
>>> Here is another patch (see attached file) that fix another
>>> potential race. 
>>> Do you have bandwidth to have a try? Thanks in advance!
>> I built a kernel with your additional patch.
>> I have it running on all 13 domU's with use_smartpoll=1.
>> I'll report tomorrow morning whether there were any lockups.
>> FYI, total today I had 6 lockups with use_smartpoll=1 and the
>> previous patch. 
> Sorry bad news again...
> Had 5 lockups within 4 hours.
> Then I restarted all domUs with use_smartpoll=0 and haven't had any
> lockups in 7 hours. 

Thanks Gerald.
I will try to find a local environment to do more investigation.

Best Regards,
-- Dongxiao
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