[x264-devel] Re: x264 & slices

[Thomas Herrmann]

Hi Tuukka, Måns & list,

Tuukka writes:

> Anyway, how can you see how busy each CPU is? My top on Debian
> box doesn't display per-CPU busyness, if I remember correctly...

... mine does, just hit the "1" key.

> It defines how many threads to use. Generally OS should schedule
> the same thread always on the same CPU, because that's more efficient...
> And Linux should do this, maybe your monitoring tool isn't
> displaying loads correctly?

... maybe, but this is what I see. Don't know how to check it otherwise.

Måns writes:

> The OS moves tasks between CPUs for various reasons.  This is what you
> are seeing.

... ok, but why is threads=4 not using 100% of all 4 CPUs? Is there so much
overhead to slice the video?

Thanks & regards,  Thomas




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