performance work

[Wade Brainerd]

On Tue, Dec 16, 2008 at 7:08 PM, Neil Graham <Lerc at screamingduck.com> wrote:

> On Tue, 2008-12-16 at 16:23 -0700, Jordan Crouse wrote:
> > The first thing you need to do is determine which operations you really
> > care about. I would first target the operations that deal with text and
> > rounded corners, since those will be the most complex. Straight blits
> > and rectangle fills are important, but less interesting, since they
> > involve the least work in the path between you and the GPU.
> Fundimentally, you care about the operations that are making it slow.
> Those are the ones A) being used lots B) Take notable amounts of time in
> total and C) have room for improvement.
>
> Is there a build of cairo that can produce a log of what calls are used
> in typical XO use?
>

Some good ways to find out are located here:

http://wiki.laptop.org/go/Performance_tuning

I personally most often use oprofile, without vmlinux (I don't know where to
get a vmlinux file for the olpc kernel).

-Wade
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