Messages in this thread | | | Date | Tue, 6 Jul 2010 18:01:45 +0200 | Subject | Re: 2.6.35-rc3: System unresponsive under load | From | Luca Tettamanti <> |
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On Wed, Jun 30, 2010 at 9:07 PM, Manfred Spraul <manfred@colorfullife.com> wrote: > Attached is a new idea, could you try it with your httpd test?
Will test ASAP.
> Perhaps the race is actually a race in the user space: > The exit path of semtimedop() does not contain an explicit memory barrier. > For the kernel, it does not matter: It merely reads one integer value. > If sysret is also no memory barrier, then user space might observe stale > data. > > Which cpu do you have? I was unable to show any misbehavior on a Phenom X4.
Intel(R) Core(TM)2 Duo CPU T7500 @ 2.20GHz
I also have a Phenom X4, but I'm currently waiting a replacement for the PSU...
Luca
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