Re: BUG: Slowdown on 3000 socket-machines tracked down

[Christian Schmid]

This makes me seriously to despair.... the bug/lock/freeze is still there in 2.6.12rc6 ...

I am seriously offering 1000 dollars to the one who fixes this. (No Joke. I NEED that fixed. If you 
want me to give that money to some organization, tell me.)

Please come back to me if you need more details or tell me what I can do to help you track this 
down. Review all postings before please. Its a vm-lock because even opening a /proc file needs 
around 20-30 seconds...

Nick Piggin wrote:
> On Mon, 2005-03-14 at 05:53 +0100, Christian Schmid wrote:
>
>
> > > The other thing that worries me is your need for lower_zone_protection.
> > > I think this may be due to unbalanced highmem vs lowmem reclaim. It
> > > would be interesting to know if those patches I sent you improve this.
> > > They certainly improve reclaim balancing for me... but again I guess
> > > you'll be reluctant to do much experimentation :\
> >
> > I have tested your patch and unfortunately on 2.6.11 it didnt change anything :( I reported this 
> > before, or do you mean something else? I am of course willing to test patches as I do not want to 
> > stick with 2.6.10 forever.
>
>
> Well I hope that scheduler developments in progress will put future
> kernels at least on par with 2.6.10 again (and hopefully better).
>
> Yes you did report that my patch didn't help 2.6.11, but could those
> results have been influenced by the suboptimal HT scheduling? If so,
> I was interested in the results with HT turned off.
>
> Nick
>
>
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