[x264-devel] hyperthreading and latency

aviad rozenhek aviadr1 at gmail.com
Sun Oct 17 13:56:04 CEST 2010


>
> > I think the answer is no and that the default value of X264_THREADS_AUTO
> > could work even better on hyper-threaded systems if hyper-threading are
> not
> > considered an actual CPU.
>
> If you need low latency, you should use sliced threads, as explained
> in the documentation.
>
> Tests show that hyperthreading improves performance by about 25%
> overall under normal conditions.  Latency is completely unrelated to
> performance, except in that if you force low latency settings, you
> will hurt performance.
>
> Dark Shikari
>

Thanks,
What I actually need is to know in advance how much latency x264 is
introducing, while keeping the great quality associated with the default
presets and normal threads.
additionally, I'm asking whether using 12 threads instead of 6 on a 4-core
i7 improves performance?
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