[Mesa-dev] [PATCH 0/7] Fix ralloc/rzalloc usage v2

[Martin Peres]

On 14/06/16 18:47, Martin Peres wrote:
> On 14/06/16 17:58, Juha-Pekka Heikkila wrote:
>> Here is fixed version of this ralloc set. Now I got to run this on many
>> different machines thanks to Mark Janes. There didn't show up any
>> regressions on different gen hw. On my IVB I've been running also many
>> different traces with Apitrace while having Valgrind running on
>> background
>> but Valgrind did seem to be happy with my changes.
>>
>> As a performance test I did shader-db compile runs 10 times and compare
>> timing results against what Mesa master does on my IVB. To my surprise
>> this
>> does bring reasonable gain which also seem to be repeatable, on my IVB
>> shader compile time is around 5% faster with these changes.
>
> On my SKL gt2, I only get a 0.35% improvement (10 runs also).
>
> Ministat says that there is no difference proven at 95% confidence and
> 0.35% at 90%. Adding 100 more runs overnight, we'll see what we get in
> the end.

With n=110: Difference at 95.0% confidence
         -0.133665% +/- 0.0945651%
         (Student's t, pooled s = 0.447829)

Martin