[x264-devel] Max thread number of x264

[Alex Jurkiewicz]

Hi,
I'm not convinced your numbers absolve the IO subsystem. What about stats on
iowait or disk throughput?
Each 720x576 YV12 frame is ~600kbytes, even reading 60fps could start
causing issues on a single SATA drive.
Try encoding your input video from a ramdisk.

Alex

On 7 April 2010 12:05, kenter <kenter83 at gmail.com> wrote:

> Thanks for all your help. I've tried your commandline, the result shows for
> --preset slow, CPU ultilize only 700+ and fps is 70.46. The CPU power is
> still largely wasted.
>
> The disk bandwidth is I also tried *--preset ultrafast*, the fps can
> achieves to 800+, which means that disk bandwidth shouldn't be our
> bottle-neck.
>
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