Re: [Nouveau] OpenGL context switching with Noveau

Hi, Thank you: this confirmed my suspicions about context switching. A have a small follow up question.. I actually solved the problem for the moment, by dropping openGL completely. My initial tests show that Xvideo handles video dumping ~ 10 times more effectively than openGL and does not

Re: [Nouveau] OpenGL context switching with Noveau

For details see my presentation on day 3 of XDC2016. TL;DW: A context switch on average takes ~25 microseconds, but depending on the display resolution and the load on the card times up to 130 microseconds have been observed. The average does not appear to differ much between cards as the

Re: [Nouveau] OpenGL context switching with Noveau

Context switching = very slow on NVIDIA. Don't do it if you can avoid it. Each context is like a megabyte of data, if not more. Each time it has to get saved off and restored. On Wed, Feb 8, 2017 at 1:38 PM, Sampsa Riikonen wrote: > Dear Devs, > > (I hope this question is

[Nouveau] OpenGL context switching with Noveau

Dear Devs, (I hope this question is not that much OT for this list..) My question is about fast OpenGL context switching, i.e. when there are several processes using the same nvidia card, each one with their own OpenGL context. In my specific case, I am trying to dump 720p video