Quoting Paul B Mahol (2024-07-18 17:31:50) > On Thu, Jul 18, 2024 at 10:20 AM Anton Khirnov <an...@khirnov.net> wrote: > > > Quoting Michael Niedermayer (2024-07-18 00:32:38) > > > the data for each decoder task should be together and not scattered > > around > > > more than needed, reducing cache efficiency > > > > > > putting all this extra code in the inner per pixel loop is not ok > > > especially not for the sake of avoiding a memcpy of a few hundread bytes > > multiple levels of loops outside > > > > A nice theory, but in practice this patchset makes single-threaded > > decoding about 4% faster overall, on a 1920x1080 10bit sample. That's > > just the ffv1 parts (up to patch 28), full set also improves frame > > threading performance as follows: > > threads improvement > > --------------------------- > > 2 52% (yes really) > > > > What?
Current code is effectively serial with 2 threads. -- Anton Khirnov _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
