Am 26.10.2010 um 01:26 schrieb Dan Kegel: > Hey folks, > I've run into two web sites that claim that the Linux kernel causes > performance > problems in particular games (see below). Anybody know of others? UT 3 I think. It spends a lot of time in task switching, but I have no proof that it is indeed a kernel bug and not a wine bug or a red herring. Interestingly it only hits the unmodified game hard, games based on the engine(e.g. Mass Effect 2) seem to be less affected.
Don't get fooled by oprofile though. A high amount of time spent in vmlinux may be because of time spent in the driver module or oprofile itself. > And has anybody found concrete improvements in performance > of a particular app (other than an audio workstation app) from using > a realtime kernel? I wouldn't expect a realtime kernel to improve performance in general, since realtime constraints make achieving overall performance harder(e.g. limit the ability to cache writes). I haven't experimented with a realtime kernel though.
