[x264-devel] Cycles for X264

[Jason Garrett-Glaser]

On Tue, Jun 8, 2010 at 7:32 AM, Zubair Ali Khan <zkhan at d2tech.com> wrote:
> Hi all,
>
> I am running X264 on ARM Snapdragon processor (similar to Cortex-8). It
> seems to be taking quite a bit of cycles.
>
> For example, each call to encode will consume average 100 million cycles,
> limiting the frame rate to 5 frames per second on this processor. My
> expectation was average 15 million cycles per call. Am I expecting too much
> or is it some configuration issue?

Cortexes, despite being fast for an ARM, are in fact not very fast
compared to desktop processors.  You may have to use "ultrafast" or
"superfast" to get reasonable performance.

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