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Re: [libvirt] Release of libvirt-0.6.4



On Mon, Jun 01, 2009 at 10:26:38AM +0000, Frederik Himpe wrote:
> On Mon, 01 Jun 2009 10:36:36 +0100, Daniel P. Berrange wrote:
> 
> > On Sat, May 30, 2009 at 12:45:21PM +0000, Frederik Himpe wrote:
> >> On Fri, 29 May 2009 19:18:05 +0200, Daniel Veillard wrote:
> >> 
> >> >  - test case for exercising the event loop (Daniel Berrange)
> >> 
> >> I think this test is failing for me on Mandriva Cooker (both i586 and
> >> x86_64):
> 
> >> What could be wrong?
> > 
> > Strange, this test case works fine for me on both archs with Fedora
> > 9/10/11 and RHEL 5.
> > 
> > Could you run the test manually with debugging turned on, eg
> > 
> >    LIBVIRT_DEBUG=1  ./eventtest
> > 
> > And also try and capture an strace log with timings
> > 
> >    strace -ttt ./eventtest
> 
> Actually I found out the test failure is not 100% reproducible. I have
> seen it failing in steps 6, 9 and IIRC also step 10 of eventtest.

What I think is happening is that poll() is returning much sooner than
we anticipate. When you give it a timeout, it'll return upto 1 timeslice
before the timeout is due. I suspect that this is what is tripping up
the test case on Mandriva. Could you apply the following patch, and
re-build & run  LIBVIRT_DEBUG=1 ./eventtest  again, and also re-run with
the 'strace -ttt -f ./eventtest' (i forgot to ask for -f last time).

Regards,
Daniel
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