Thanks for doing this yet again.

On 6 July 2012 16:52, Mans Rullgard <mans.rullg...@linaro.org> wrote:
> I ran my usual set of benchmarks of libav compiled with the current gcc
> releases (hand-written assembly disabled).  The results are in this
> spreadsheet:
> https://docs.google.com/spreadsheet/ccc?key=0AguHvNGaLXy9dHExeWZ1YWZ1c0s2VnpJRkl2bVRPU2c
>
> First the good news, almost everything is faster with 4.6+ than with
> linaro-4.5.
>
> The bad news is that some things have regressed since 4.6, even if not
> all the way back to 4.5 levels.  A few especially problematic pieces
> stand out:
>

could you pull out pre-processed output ?

> - The mp3 test performs 5-15% worse.  This regression is (mostly)
>   attributable to the ff_mpadsp_apply_window_fixed [1] function.
>   We have looked at this one before.

Yes , we do need to create a testcase out of this one and work through it.

>
> - FLAC is 9% slower in upstream 4.7/4.8 compared to Linaro releases.
>   Here flac_lpc_16_c [2] and flac_decorrelate_indep_c_16 [3] are
>   mainly to blame.

I'll look at these when I do the sched-pressure stuff upstream.

regards,
Ramana

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