[GEM-dev] (no subject)

chris clepper cgc at humboldtblvd.com
Fri Mar 17 21:21:27 CET 2006


I won't be able to look at the Shark traces until later, but both of the
functions you list are Quicktime internals.  What version of QT are you
using?

On 3/17/06, B. Bogart <ben at ekran.org> wrote:
>
> Hi Chris,
>
> Here are a couple links:
>
> This one was the profile done while the video is running fine:
> http://www.ekran.org/ben/research/While-PD-runs-fine@start.mshark
>
> This is the one once PD has been running for a while (20-30min):
> http://www.ekran.org/ben/research/Pd-is-now-slogging.mshark
>
> Looks like while things are looking ok 25% CPU goes into "DecodeBlocks"
> which looks like the decompression process. When things go bad it looks
> like "mentorGetNextFrame" takes up 45% so that looks like the problem.
> Sorry I don't have the debugging symbols in this gem binary, but I hope
> the profiles can still help.
>
> Thanks for the tips Chris, shark is indeed pretty sharp... :)
>
> .b.
>
>
>
> On Fri, March 17, 2006 11:33 am, chris clepper said:
> > Use this URL instead http://developer.apple.com/tools/sharkoptimize.html
> >
> > On 3/17/06, chris clepper <cgc at humboldtblvd.com> wrote:
> >>
> >> I just realized that there is no need for me to test your patch.  You
> >> can
> >> install the Apple CHUD tools and run Shark yourself.  All of the
> >> directions
> >> are on this page:
> >>
> >>
> >>
> http://developer.apple.com/tools/performance/optimizingwithsystemtrace.html
> >>
> >> Save the session and post it online somewhere and one of us will have a
> >> look.
> >>
> >>
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> >
>
>
>
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