From: "H. Peter Anvin" <hpa@zytor.com>
To: Alexey Fisher <bug-track@fisher-privat.net>
Cc: kernel-testers-owner@vger.kernel.org,
linux-kernel@vger.kernel.org,
Suresh Siddha <suresh.b.siddha@intel.com>,
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Subject: Re: [regression] glx performance drop with: "x86: PAT: implement track/untrack of pfnmap regions for x86 - v3"
Date: Tue, 06 Jan 2009 10:52:09 -0800 [thread overview]
Message-ID: <4963A859.6030406@zytor.com> (raw)
In-Reply-To: <4963A71C.2020107@fisher-privat.net>
Alexey Fisher wrote:
> glx perfomance regression after this patch.
> goot kernel: glxgears = 1400 fps
> bad kernel: glxgears = 300 fps ( same speed with disabled drm module )
>
> kernel log:
> glxgears:5775 map pfn expected mapping type write-back for
> d1000000-d1c80000, got uncached-minus
> glxgears:5775 freeing invalid memtype d1000000-d1c80000
>
Have we caught a case of actual overlap, i.e. a driver bug here?
-hpa
next prev parent reply other threads:[~2009-01-06 18:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-06 18:46 [regression] glx performance drop with: "x86: PAT: implement track/untrack of pfnmap regions for x86 - v3" Alexey Fisher
2009-01-06 18:52 ` H. Peter Anvin [this message]
2009-01-06 19:05 ` Pallipadi, Venkatesh
2009-01-07 1:33 ` Pallipadi, Venkatesh
2009-01-07 22:43 ` Pallipadi, Venkatesh
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