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I have a problem with an app that is slowed down significantly when an openFrameworks based app is launched. Both apps use little cpu and memory, so i don't think there's a bottleneck.

I can reproduce the problem by running

openssl speed

alone compared to

openssl speed

in one console and

glmark2 -b jellyfish

in another.

So openGL rendering somehow affects the CPU performance and it is not clear to me why.

Can someone explain ?

(System is Ubuntu 14.04 i7 with intel HD3000, however a system with an Nvdia card showed the same effect)

share|improve this question
It sounds like the device drivers your using do not fully support OpenGL (ES) 2.0 – Ramhound Jul 24 '14 at 11:14
I installed the driver from… which is the best I can get I guess. Any way to test if it supports OpenGL 2.0 ? – joekr Jul 24 '14 at 16:58

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