See here: http://rafb.net/p/n7UeOP48.html
They are no Players present, doesn't matter, the drops are equal with or without players. If a server is used the Usage of the assigned core rises up to 5-6%, no differences here between the cores. ----- Original Message ----- From: "David A. Parker" <[email protected]> To: "Half-Life dedicated Linux server mailing list" <[email protected]> Sent: Tuesday, January 20, 2009 11:25 PM Subject: Re: [hlds_linux] different cpu-cores -> different performance > The taskset commands look good. What is the usage on each CPU? htop is > a good utility to see that kind of information quickly. Also try: > > mpstat -P ALL 1 1 > > This will give you the usage of all CPUs over a one-second interval. > Adjust the first number to make it measure usage over a different > interval (in seconds). Adjust the second number to make it repeat N > times. > > - Dave > > Matthias Bleile wrote: >> Wow, many answers ^^. >> >> So: >> >> --------------------------- >> Could you post the taskset command lines you are using? >> taskset -c 0 ./hlds_run..... >> taskset -c 1 ./hlds_run..... >> --------------------------- >> --------------------------- >> cat /proc/interrupts. Probably sharing interrupts. >> See here: http://rafb.net/p/LN4JtN70.html >> Only big differents is the "timer" interrupt only occuring on CPU0. >> The "Rescheduling Interrupts" can't be it, it would mean CPU2 is in >> perfect >> health, but it isnt. >> --------------------------- >> --------------------------- >> Turn off irqbalancing. It's useless and it doesn't do anything >> but hurt gameserver hosting. >> i can't even turn it on, if i wanted to, cause: >> >> Symbol: IRQBALANCE [=n] >> Prompt: Enable kernel irq balancing >> Depends on: X86_32 && SMP && X86_IO_APIC >> >> I dont use an 32Bit System. >> --------------------------- >> --------------------------- >> Useless. It doesn't do what it used to, and >> biiig performance differents between nice --0 and nice --20. >> --------------------------- >> --------------------------- >> Kind of useless, but can be useful in specific situations >> Big difference between no preemption and full preemption. >> without preempt im not able to get it stable 1000fps even on core0 >> --------------------------- >> --------------------------- >> Try running 2 servers on Core 0 and 2 and the rest on Core 1 and 3. Does >> that change anything for you? >> same here. >> core0 = stable 1000 >> core1 = small spikes >> core2 = big spikes >> core3 = only spikes ;) >> >> Guess thats it for now ^^. >> >> >> ----- Original Message ----- >> From: "1nsane" <[email protected]> >> To: "Half-Life dedicated Linux server mailing list" >> <[email protected]> >> Sent: Tuesday, January 20, 2009 10:51 PM >> Subject: Re: [hlds_linux] different cpu-cores -> different performance >> >> >>> Try running 2 servers on Core 0 and 2 and the rest on Core 1 and 3. Does >>> that change anything for you? >>> >>> On Tue, Jan 20, 2009 at 4:23 PM, Gary Stanley >>> <[email protected]>wrote: >>> >>>> 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 >>>> >>> _______________________________________________ >>> 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 >> > > -- > > Dave Parker > Utica College > Integrated Information Technology Services > (315) 792-3229 > Registered Linux User #408177 > > _______________________________________________ > 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
