My experience differs from Monk's on this. I started using the CFS patches before they were integrated into the mainline, and based on my (hundreds of hours of) testing, CFS and newer kernels run just fine -- in fact, better than older ones. But, I do apply my own patchset to them that affects their behavior, and likely use a different .config than others, so YMMV.
We do agree on staying away from RT kernels. -John ----- Original Message ----- From: "Crazy Canucks" <crazy_canu...@rogers.com> To: "Half-Life dedicated Linux server mailing list" <hlds_linux@list.valvesoftware.com> Sent: Sunday, September 06, 2009 4:09 AM Subject: Re: [hlds_linux] 1000 FPS CentOS Servers? > This discussion has me wondering. Why am I reading the newer kernels > getting dissed? From what I read not too long ago the scheduler in the > older kernels wasn't that great, and the new scheduler is much better. > Is this not true? > > I'm not picking a fight here, I'm genuinely curious. > > Drek > > Gary Stanley wrote: >> At 09:05 PM 9/5/2009, Eric Greer wrote: >> >>> This is all really awesome information everyone and I am very >>> appreciative >>> of all your ime and knowledge... however... >>> >>> What does this mean to the guy who hasn't recompiled a linux kenel >>> before? >>> Right now I'm seting fps_max on the command line to 500. Can I get more >>> than >>> 500 fps without recompiling? What settings would that require? >>> >>> If I do have to recompile, where do I start learning for that? How >>> dangerous is it? >>> >>> Thanks again everyone, >>> >>> Eric >>> >> >> The stock centos kernels do not have hrtimers, so you aren't able to >> get low latency sleeping. The 2.6.18 kernels are very good latency >> wise, so unless you want to patch them in you're going >> to have to build something newer. The newer kernels with CFS are >> pretty much crap, in my opinion, due to the scheduler changes and >> other .. things, but mostly you will need HPET support in the BIOS >> enabled with hrtimers. >> >> As Laws stated eariler, the older kernels are generally better >> overall, and newer kernels with RT have too much overhead in most of >> the codepath the game does not use. >> >> -M >> >> >> >> >> >> >> _______________________________________________ >> To unsubscribe, edit your list preferences, or view the list archives, >> please visit: >> http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> >> > > > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > http://list.valvesoftware.com/mailman/listinfo/hlds_linux > _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlds_linux
