1.4 -> 1.5.1 performance regressions
michel at daenzer.net
Tue Jan 27 03:53:21 PST 2009
On Tue, 2009-01-27 at 12:42 +0100, Fabio wrote:
> > On Tue, 2009-01-27 at 11:55 +0100, Fabio wrote:
> > > > On Thu, 2008-10-09 at 11:02 +0200, Fabio wrote:
> > > > >
> > > > > I noticed some performance regression moving to a newer system with Xserver
> > > > > 1.5.1 from an 1.4 system with both XAA and EXA.
> > > >
> > > > Can you try current Git server-1.5-branch? Adam Jackson just backported
> > > > the reduction of dixLookupPrivate() overhead, which is used extensively
> > > > by the EXA core at least. If there are still regressions with EXA, I'd
> > > > be interested in sysprof/oprofile data separately for each regressed
> > > > case.
> > >
> > > I noticed that pre-1.6 is faster than 1.5.3, but still slower than 1.4.
> > >
> > > As reported by someone in the bug report, the patch from
> > > https://bugs.freedesktop.org/show_bug.cgi?id=16647#c11 was never
> > > applied. Is it still needed?
> > Have you tried it to see if it helps for the performance regressions you
> > noticed?
> No (I am using prebuilt packages), however, according to this comment, it fixes the regression:
... for the benchmark / workloads discussed in the bug report. Are the
workloads you noticed the performance regression with similar to those?
Earthling Michel Dänzer | http://www.vmware.com
Libre software enthusiast | Debian, X and DRI developer
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