[ubuntu-x] Test kernel for perf issues on -intel
Michael Larabel
michael.larabel at phoronix.com
Thu Apr 16 03:10:25 BST 2009
Michael Larabel wrote:
> Bryce Harrington wrote:
>> Another option which has been suggested is to turn off migration
>> altogether:
>>
>> Option "EXAOptimizeMigration" "off"
>>
>> This may have the same "benefit" as the greedy migration, but without
>> the irritating side effects. It would be hugely helpful if people could
>> test this option (independently from the kernel change) and see if they
>> spot any regressions with it set. Meanwhile I'll try to get some debs
>> put together for it.
>>
>> Thanks,
>> Bryce
>>
>> On Wed, Apr 15, 2009 at 11:54:43AM -0700, Bryce Harrington wrote:
>>
>>> Tim pointed me to this:
>>>
>>> ---
>>> bryce: 2.6.30-rc2 has a bunch of i915 patches from Dave Arlie. He
>>> claims
>>> big performance improvements which likely address out issues in
>>> Jaunty. Is it possible for you to run that kernel somewhere and test
>>> the
>>> results?
>>>
>>> http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30-rc2
>>>
>>> ---
>>>
>>> If anyone has hardware that they're seeing the -intel performance
>>> regression and would be willing to test the above, please do so and
>>> report results here.
>>>
>>> (It would be especially helpful if you could run a 3d game that prints
>>> fps, to measure both before and after.)
>>>
>>> Bryce
>>>
>>>
>>> --
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>>
>>
>
> Attached are results using the EXAOptimizeMigration off thrown into
> the mix. This option isn't definitively faster, but there seems to be
> a few areas where it's ahead.
>
> Michael
Attached are the results with the Linux 2.6.30-rc2 kernel being used
with EXA and no options being set.
Michael
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