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bas-t / ffdecsawrapper

FFdecsa empowered softcam for MythTV
GNU General Public License v3.0
17 stars 9 forks source link

Add support for AVX/AVX2 #20

Closed bas-t closed 10 years ago

bas-t commented 10 years ago

Using a 8k buffer, it claims to be up to 18% faster then SSE/SSE2

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d764593af924930d5c15685bc5946cb943da1a55

bas-t commented 10 years ago

Hmm, come to think of it, only newer high end cpu's can do avx. Those are very fast cpu's and will hardly benefit of using avx at all. I've tested my low end ivy bridge cpu (intel G2120) with 16 concurrent HD recordings. Result: it can do at least 32 concurrent HD recordings without avx, but my hard disk will probably not be able to deal with it. Conclusion: if I want state of the art performance, I'd better focus on building a superfast, supersilent RAID system. That's where the next bottleneck occurs. Not in FFdecsawrapper.