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Re: [Xen-devel] RE: bnx2 FTQ issues on 2.6.32 + xen 4.0.1;

To: MaoXiaoyun <tinnycloud@xxxxxxxxxxx>
Subject: Re: [Xen-devel] RE: bnx2 FTQ issues on 2.6.32 + xen 4.0.1;
From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Date: Sat, 30 Jul 2011 10:15:39 -0400
Cc: xen devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, mchan@xxxxxxxxxxxx
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> > > I've spent more time on this.
> > > It's easy to reproduce. I have two physical host, on top of which, 
> > > totally start 15VMS, doing migrating over
> > > and over again. Since xen live migration invovle large mount of memory 
> > > copy, so I can see that the network is
> > > saturated. About 16 hours later, the FTQ dump will show up.
> > > 
> > > I've debugged more. 
> > > Below debug code is added when FTQ happens.
> > > Does anyone know what is going on? 
> > 
> > No idea. Did Michael Chan send you a private email with some ideas?
> > 
> Yep, Michael give me some debug patch. But unfortunately, when this bug show 
> up, there is no enough time for the
> kernel to print all debugged log before it crashes. 

Can you use a serial console at a high baud rate?

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