[tremor] Tremor on x86 vs ARM, performance highlights: CPU use 120x different

[dilb]

> I'm talking about the original tremor PLUS the Nicolas 'Honey I shrunk
> tremor in half' Pitre patch from a week back.  The new stuff doesn't fit
> around the shrunken code.  I don't have your asm mdct code which may
> account for the difference (33% vs 18%).  To double-check the CPU use I run
> a console test version outputing to null and sure enough, same results (20
> seconds time per minute of CM).  -q10 uses more CPU than -q5 for me, about
> 20% more?, but that may simply be a result of all the extra memory
> handling.  I don't really know.  Like most that aren't intimate with its
> construction, I'm happy it works at all.

I doubt my assembly version could by itself improve so much the CPU load :), 
not that it would not be nice, but a little too much.
If you want to try my version, you can have it here: 
http://520044965958-0001.bei.t-online.de/pub/OggVorbis_Decoder/OVD_v0.6/libvorbis_Tremor_20020906.tgz

I still don't know what quality settings you used (-q5 ?) to create your 
vorbis files.

Dilb.
--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'tremor-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.