[cairo] Pixman ARM Performance

[Chris Wilson]

On Thu, 2009-07-23 at 14:46 +0100, Jacob Bramley wrote:
> Hello all,
> 
> I've been having a look at the performance of Pixman on ARM and have 
> noticed something strange: It seems that between about 0.12.0 and 
> 0.15.2, the performance of pixman dropped by about 1.5 times overall. 
> Turning on the Neon optimizations in the latest source drastically 
> improves a handful of tests, but most are still very slow in comparison 
> to 0.12.0 and the overall perforamnce is pretty much the same.

Interesting. Could you post the more interesting snippets from
'./cairo-perf-diff-files pixman-0.12.0.perf pixman-0.15.16.perf'?

Are you in a position where you can regularly run ./cairo-perf (and
hopefully cairo-perf-trace!) on the ARM platform, as I think a lot of
people would be interested in the results and the continuous monitoring.
If you could even grab the occasional profile, that'll provide
entertainment for these rainy summer days.
-ickle