On Tue, 2010-04-06 at 09:59 -0700, Martin Bligh wrote: > +cc: Michael. Poking md, mbligh
> > ---------- Forwarded message ---------- > From: Glauber Costa <[email protected]> > Date: Tue, Apr 6, 2010 at 9:02 AM > Subject: [Autotest] increase robustness of tsc test > To: [email protected] > > > Hi, > > I've recently saw a lot of failures on running checktest test > on virtual machines. Investigating further, it seems that running it > into VMs just makes a conceptual problem more likely to happen: > Since we're in userspace, the other thread that should read tsc can be > out of the of the cpu at the moment, so all measures will be very > different. > > This is indicated by the tsc roundtrip. In failed measures, they are all > quite big. So I am proposing this patch, that basically ignores roundtrips > that are twice as big as the threshold, or more. > > It makes the test pass to me, in machines I would expect them to. > > Thanks > > _______________________________________________ > Autotest mailing list > [email protected] > http://test.kernel.org/cgi-bin/mailman/listinfo/autotest > _______________________________________________ > Autotest mailing list > [email protected] > http://test.kernel.org/cgi-bin/mailman/listinfo/autotest _______________________________________________ Autotest mailing list [email protected] http://test.kernel.org/cgi-bin/mailman/listinfo/autotest
