Re: aim7 scalability issue on 4 socket machine

[Andrew Morton]

On Fri, 18 Sep 2009 10:02:19 +0800 "Zhang, Yanmin" <yanmin_zhang@xxxxxxxxxxxxxxx> wrote:

> > > Did you see Lee's patch?:
> > > 
> > >  http://lkml.org/lkml/2009/9/9/290
> > > 
> > > Added Lee and Hugh to CC, retained the below patch for them.
> > 
> > Thanks a lot for the CC, Peter.
> > See my reply to that mail for the slightly corrected version.
> > 
> > Yes, Yanmin and Lee appear to be fixing exactly the same issue.
> > I haven't thought through Yanmin's version for correctness, but
> > it lacks the vm_start check I added to Lee's, and I do prefer
> > Lee's style - hey, nothing personal!
> > 
> > So, Yanmin, please retest with http://lkml.org/lkml/2009/9/13/25
> > and let us know if that works as well for you - thanks.
> I tested Lee's patch and it does fix the issue.

Do we think we should cook up something for -stable?

Either this is a regression or the workload is particularly obscure. 

aim7 is sufficiently non-obscure to make me wonder what's happened here?

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