As far as I know, srcds is always single-threaded. L4D and L4D2 will use multiple CPUs if they are running multiple forks, but even in this configuration each individual fork will only use one CPU.
- Dave ----- Original Message ----- From: Claudio Beretta <beretta.clau...@gmail.com> Date: Tuesday, March 15, 2011 9:49 am Subject: [hlds_linux] srcds_linux multithreaded To: Half-Life dedicated Linux server mailing list <hlds_linux@list.valvesoftware.com> > TL;DR version: are there magic command line parameters or > convars that > enable multithreading for srcds games on linux? Or anything that might > prevent the gameserver from using more than one core? > > Long version: > I recently changed OS from Windows 2008 64 bit to Centos 5.5 64 bit > because I needed iptables to filter all the incoming attacks so > popular in these days. > The hardware remained the same: Xeon w3520 (server version of i7 920), > 12 GB RAM, 2x80 GB Intel x25-M SSD. > The problem I'm encountering is that when any 32 slots server gets > full, the server fps (measured from rcon stats and net_graph 4) drop > below acceptable levels. They may even reach 20-30 fps, and much less > when there are bots playing. This obviously affects the > tickrate, and > players experience rubber banding and bad hit detection. > Both top and rcon stats say that the CPU usage never goes over > 100% (1 core). > On windows rcon stats reported up to 150%, and sysinternals process > explorer confirmed that the gameserver was using up to 19% of the > whole system (which means approximately 1.5 cores, since this > box has > 4+4 cores thanks to hyperthreading). On windows, fps were > stable, and > only in a couple of maps the tickrate would drop below 66. > I've tried several kernels: the stock centos one > (2.6.18-194.32.1.el5), a couple provided by my host via netboot > (2.6.34-something, 2.6.34-something HZ1000) and now i'm using a > realtime kernel (2.6.33.7-rt29). Both 2.6.34 and the realtime kernel > were the best regarding to fps jitter, but they did't improve at all > the low fps when the server is full. > Playing with taskset to set the affinity of the process has no visible > effects, same thing with nice and chrt. Also tried disabling all > addons and using a 3 lines server.cfg (sv_log 0; hostname; > rcon_password) but still no effect worth mentioning. > > I've come to the conclusion that srcds on linux can use at most one > core. I hope I'm wrong, since it would mean I'm stuck at running 32 > slots servers at tickrate 33 despite having good hardware. > How you guys manage to run 32 slots srcds servers on linux? > Thanks > Claudio > > _______________________________________________ > 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
