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From: Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Maarten Maathuis <madman2003-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
	Martin Peres
	<martin.peres-Iz16wY1oaNPLSKGbIzaifA@public.gmane.org>
Subject: Re: "enable ctxprog xfer only when we need it to save power" introduces big performance regression
Date: Sun, 30 Oct 2011 11:15:29 +1000	[thread overview]
Message-ID: <1319937329.4794.0.camel@nisroch> (raw)
In-Reply-To: <CAGZ4FETt6QzMkxrMQwJsszjuQq0wdt85ujRZbxkdurkduaHh2A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On Sat, 2011-10-29 at 20:00 +0200, Maarten Maathuis wrote:
> On Sat, Oct 29, 2011 at 7:29 PM, Marcin Slusarz
> <marcin.slusarz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > On Sat, Oct 29, 2011 at 07:08:01PM +0200, Marcin Slusarz wrote:
> >> Hi
> >>
> >> I've bisected pretty big performance regression (nv92):
> >>
> >> $ git bisect good
> >> b2737681d5442f05ab6419e05468c3d2511a5ced is the first bad commit
> >> commit b2737681d5442f05ab6419e05468c3d2511a5ced
> >> Author: Martin Peres <martin.peres-Iz16wY1oaNPLSKGbIzaifA@public.gmane.org>
> >> Date:   Sat Jul 30 23:08:45 2011 +0200
> >>
> >>     drm/nv50/gr: enable ctxprog xfer only when we need it to save power
> >
> > Weird, reverting it on top of current git does not restore it - in
> > glxgears it's even worse (-~50%).
> >
> > Marcin
> > _______________________________________________
> > Nouveau mailing list
> > Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
> > http://lists.freedesktop.org/mailman/listinfo/nouveau
> >
> 
> Before this patch, what ensured that context switching was enabled?
It was enabled by default during graph init, this was removed with the
"drm/nv50/gr: refactor initialisation" commit.

Ben.
> 

  parent reply	other threads:[~2011-10-30  1:15 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-29 17:08 "enable ctxprog xfer only when we need it to save power" introduces big performance regression Marcin Slusarz
     [not found] ` <20111029170801.GA3219-OI9uyE9O0yo@public.gmane.org>
2011-10-29 17:29   ` Marcin Slusarz
     [not found]     ` <20111029172923.GA3110-OI9uyE9O0yo@public.gmane.org>
2011-10-29 18:00       ` Maarten Maathuis
     [not found]         ` <CAGZ4FETt6QzMkxrMQwJsszjuQq0wdt85ujRZbxkdurkduaHh2A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-10-30  1:15           ` Ben Skeggs [this message]
2011-10-29 19:09       ` Marcin Slusarz
     [not found]         ` <20111029190938.GA3105-OI9uyE9O0yo@public.gmane.org>
2011-10-30  0:25           ` Maxim Levitsky
2011-10-30 10:33             ` Marcin Slusarz
     [not found]               ` <20111030103349.GA3157-OI9uyE9O0yo@public.gmane.org>
2011-10-30 10:37                 ` Marcin Kościelnicki
2011-11-09 22:10           ` Marcin Slusarz
     [not found]             ` <20111109221009.GD3402-OI9uyE9O0yo@public.gmane.org>
2011-11-10  7:10               ` Martin Peres
     [not found]                 ` <4EBB78F4.2020902-Iz16wY1oaNPLSKGbIzaifA@public.gmane.org>
2011-12-28 21:39                   ` Marcin Slusarz
     [not found]                     ` <20111228213902.GA4275-OI9uyE9O0yo@public.gmane.org>
2011-12-28 23:58                       ` Martin Peres
     [not found]                         ` <4EFBAD2B.8080207-Iz16wY1oaNPLSKGbIzaifA@public.gmane.org>
2011-12-29  1:38                           ` Marcin Slusarz
     [not found]                             ` <20111229013850.GA4076-OI9uyE9O0yo@public.gmane.org>
2012-01-13 21:26                               ` Martin Peres
     [not found]                                 ` <4F10A18E.1030908-GANU6spQydw@public.gmane.org>
2012-01-17 20:55                                   ` Lucas Stach
2012-01-17 21:17                                     ` Martin Peres

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