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SubjectRe: BFS vs. mainline scheduler benchmarks and measurements
On 09/08/2009 02:32 PM, Juergen Beisert wrote:
> On Dienstag, 8. September 2009, Nikos Chantziaras wrote:
>> On 09/08/2009 11:38 AM, Arjan van de Ven wrote:
>>> On Tue, 08 Sep 2009 10:19:06 +0300
>>> Nikos Chantziaras<> wrote:
>>>> latencytop has this to say:
>>>> Though I don't really understand what this tool is trying to tell me,
>>>> I hope someone does.
>>> despite the untranslated content, it is clear that you have scheduler
>>> delays (either due to scheduler bugs or cpu contention) of upto 68
>>> msecs... Second in line is your binary AMD graphics driver that is
>>> chewing up 14% of your total latency...
>> I've now used a correctly installed and up-to-date version of latencytop
>> and repeated the test. Also, I got rid of AMD's binary blob and used
>> kernel DRM drivers for my graphics card to throw fglrx out of the
>> equation (which btw didn't help; the exact same problems occur).
>> Here the result:
>> Again: this is on an Intel Core 2 Duo CPU.
> Just an idea: Maybe some system management code hits you?

I'm not sure what is meant with "system management code."

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