On Wed, Jul 29, 2015 at 12:42:12AM +0300, Slawa Olhovchenkov
wrote:> On Sat, Jul 25, 2015 at 02:27:50AM +0000, Glen Barber wrote:
>
> > On Fri, Jul 24, 2015 at 06:36:32PM +0300, Slawa Olhovchenkov wrote:
> > > On Fri, Jul 24, 2015 at 08:25:55AM -0700, Navdeep Parhar wrote:
> > >
> > > > On Fri, Jul 24, 2015 at 10:50:10AM +0300, Slawa Olhovchenkov
wrote:
> > > > > > >
> > > > > > > For me -- degradate network performance,
about 30%. I am do
> > > > > > > verification now, by downgrading kernel.
> > > > > >
> > > > > > What kind of workload and what NIC are you using?
> > > > >
> > > > > Chelsio T580-LP-CR, http serving.
> > > > > r276179 can utilise 40Gbit, r281264 -- only 28Gbit.
> > > >
> > > > Can you please try -RC1 when it comes out and report back if
you still
> > > > see degraded network performance?
> > >
> > > Now I am try revisons r276179 and compare with r281264 (for
absolutly
> > > clean compare -- same hardware, same configuration, same
workload)
> > > before this I am comare slighty different hardware (card instaled
in
> > > different slots) and posibly different workload.
> > > After this I am try r278800 and RC1 -- one times per day.
> > >
> >
> > Please try with the 10.2-RC1 that was just released, and report back.
>
> Root of cause is BIOS setting: need ACPI NUMA to OFF.
> After this change performance gain about 30%.
> Sorry for false alaram.
>
Thank you for providing this information.
Glen
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