At 04:04 PM 1/20/2009, Matthias Bleile wrote: >Hi everybody. > >So i wasted 1 week of free time and i still wasn't able to find out.. > >We got a Intel Quad Core and 4 hlds Servers. >Each server is assigned to 1 CPU using taskset. > > >The Server assigned to CPU0 gives excellent performance, as seen here: >http://fpsmeter.fragaholics.de/?load=hlds.84.201.7.34.27030.1232478679.session > >The Server assigned to CPU1 gives a slightly worse performance as seen here: >http://fpsmeter.fragaholics.de/?load=hlds.84.201.7.34.27400.1232478412.session
cat /proc/interrupts. Probably sharing interrupts. >The Server assigned to CPU2 gives MUCH worse performance as seen here: >http://fpsmeter.fragaholics.de/index.php?load=hlds.84.201.7.34.27200.1232479691.session Same. Turn off irqbalancing. It's useless and it doesn't do anything but hurt gameserver hosting. >Got no picture of CPU3 but believe me, its worth crying. >I tried everything i could imagine. > >- 32Bit OS, 64Bit OS >- Debian, Gentoo >- hlds_i686, hlds_i486 i486 doesn't have XMM regs, nor does it have cmov (IIRC) >- not used nice, used nice --20 Useless. It doesn't do what it used to, and >- Kernel with full preemption >- Kernel without any preemption, pure processing power. Kind of useless, but can be useful in specific situations >- Turned off Multicore Scheduling, turned back on. Adds overhead to the scheduler >- tried "tsc", "hpet" and "jiffies" as clocksource. TSC is your best bet on intel, but HPET is overall the better choice. >If i use Core1+2 its as bad as i use Core3. >If i use Core2+3 its more 500FPS than 1000FPS.... You are probably running into power management issues, or SMI interrupts causing pipeline stalls. Or you are just running into know CPU errata :-) _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlds_linux
