Messages in this thread | | | Date | Tue, 25 Mar 2008 15:28:09 -0700 | From | Andrew Morton <> | Subject | Re: [Bug 10328] New: [regression] performance drop for glx |
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(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).
On Tue, 25 Mar 2008 15:11:15 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=10328 > > Summary: [regression] performance drop for glx > Product: Memory Management > Version: 2.5 > KernelVersion: 2.6.25-rc6 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: akpm@osdl.org > ReportedBy: bug-track@fisher-privat.net > > > after commit 4138cc3418f5eaa7524ff8e927102863f1ba0ea5 i expirience some grafik > related perfomance issues. > > I used glxgears for test. > before this patch: 1281.005 FPS > and after: 765.000 FPS
It nearly halved.
> latest tested commit a4083c9271e0a697278e089f2c0b9a95363ada0a > still hase bad performance. > > I use Pentium D with 2GB RAM, Grafick: i945G, ICH7 >
That's
: commit 4138cc3418f5eaa7524ff8e927102863f1ba0ea5 : Author: Siddha, Suresh B <suresh.b.siddha@intel.com> : Date: Wed Jan 30 13:33:43 2008 +0100 : : x86: set strong uncacheable where UC is really desired : : Also use _PAGE_PWT for all the mappings which need uncache mapping. : Instead of existing PAT2 which is UC- (and can be overwritten by MTRRs), : we now use PAT3 which is strong uncacheable. : : This makes it consistent with pgprot_noncached() : : Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> : Signed-off-by: Ingo Molnar <mingo@elte.hu> : Signed-off-by: Thomas Gleixner <tglx@linutronix.de> :
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