[pulseaudio-discuss] [PATCH] core: Fix a litte-endian bug in ARM svolume code
arun.raghavan at collabora.co.uk
Fri Oct 19 04:25:44 PDT 2012
On Thu, 2012-10-18 at 13:33 +0200, Peter Meerwald wrote:
> > The old code seems to be written for big-endian code.
> > NB: This one's really strange since this effectively means that our soft
> > volumes on ARMv6 have been mostly broken (since almost everybody uses
> > litte-endian). Review would be appreciated!
> benchmark results on Cortex-A8 were horrible
> runtime on beagle-xm, 800 MHz:
> checking NEON volume_float32ne
> NEON: 10223 usec.
> ref: 46480 usec.
> checking NEON volume_s16ne
> NEON: 8484 usec.
> ARM: 339272 usec.
> ref: 20203 usec.
That's odd indeed. I have this on a Freescale i.mx53 (also Cortex A8)
Checking ARM svolume
func: 905150 usec (min = 9006, max = 9562, stddev = 76.1938).
orig: 2278824 usec (min = 22760, max = 23252, stddev = 65.5575).
Any chance you could rerun this?
Also, if anyone here has a Cortex A8 handy, please let me know. It would
be good to get some more results.
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