Re: Solving Nvidia (blob) latency spikes + convert (nvidia's) semaphores into mutexes patches for 331.20 [patches and links provided]

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06.12.2013 01:20, jordan пишет:
> Hey list,
> 
> I have been experimenting with the nvidia blob, monitoring behavior /
> latencies, etc. Through some experimentation, googling/research and
> looking over previous nvidia-rt/compat patches from all over the
> interwebs; I've put together a few patches for the latest
> nvidia-331.20 driver. 


1. Blob after 325.xx.xx does not compile and does not work with our RT patches!
2. Nvidia developers specifically inserted function WBINVD to slowly work? :)
3. SFENCE need on SMP systems. Although, delay in 1000 nanoseconds - it's awful
4. Do you really think, that mutex_lock/unlock more realtime than up/down?


-- 

                                                         Pavel.

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