[FFmpeg-devel] [PATCH] Altivec split-radix FFT
Mon Aug 24 12:33:00 CEST 2009
Guillaume POIRIER <poirierg at gmail.com> writes:
> On Mon, Aug 24, 2009 at 6:09 AM, Loren Merritt<lorenm at u.washington.edu> wrote:
>> 1.6x faster than altivec radix-2 as measured by fft-test on a G4.
>> 2.0x as measured by gprof.
Don't use gprof. It adds huge overhead making it unreliable.
>> I failed to get oprofile
What did you try? You should be able to use "sudo opcontrol" on my
> or POWERPC_PERF to measure anything.
> Don't use that, it doesn't work.
Then we should either fix it or remove it. Keeping it broken serves
mans at mansr.com
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