Perhaps this is why sometimes map changes take a long time. On Sun, Sep 30, 2012 at 4:33 PM, Tony Paloma <[email protected]>wrote:
> We have some code that will attempt to set the priority of worker threads > via pthread_setschedparam. > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Marco Padovan > Sent: Saturday, September 29, 2012 10:38 AM > To: [email protected] > Subject: Re: [hlds_linux] srcds_linux changing its own process priority at > start (centos) > > :D > > btw I hope someone from Valve will clarify about this behaviour so at > least we can understand if making servers run as root "better but more > expensive" is an intender behaviour and if there's a way around that to > suppress this kind of "self changes tries" srcds_linux does :) > > > Il 29/09/2012 19:20, Andre Müller ha scritto: > > Next step: Run the srcds_linux in kernel mode: > > http://web.yl.is.s.u-tokyo.ac.jp/~tosh/kml/ > > > > 2012/9/29 Marco Padovan <[email protected]>: > >> you were right ... if you run it as root it make use of the realtime > >> scheduler and set itself to -3 as priority... > >> > >> is this normal? > >> > >> "ZOMG running az r00t makes it quicker and faster, 100000fps here I > >> come" :D > >> > >> Il 29/09/2012 19:03, Marco Padovan ha scritto: > >>> Hi, > >>> > >>> thanks for your feedback, never run the server as root so I never > >>> noticed this *weird* behaviour :S This specific unprivileged user > >>> (/*not root*/) I'm doing the tests with is allowed to set realtime > >>> scheduler for its own processes. > >>> > >>> Kernel is: 2.6.32-279.9.1.el6.x86_64 (official binary shipped by > >>> centos) > >>> > >>> What I can't understand is why srcds_linux tries to do such change > >>> on its own... If I wanted to see it make use of realtime scheduler I > >>> would do that when starting... I do not like processes doing things > >>> by their own :S > >>> > >>> Additionally this kind of behaviour would make people run the > >>> gameservers as root because it will magically performs "better" > >>> thanks to the automatic scheduler changes :O Are we opening a > >>> Pandora's box? :D > >>> > >>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > >>> 13660 testtf2 -3 0 288m 174m 19m S 9.6 1.5 0:10.58 > srcds_linux > >>> 13653 testtf2 20 0 103m 1568 1224 S 0.0 0.0 0:00.00 srcds_run > >>> > >>> > >>> pid 13660's current scheduling policy: SCHED_RR pid 13660's current > >>> scheduling priority: 2 > >>> > >>> pid 13653's current scheduling policy: SCHED_OTHER pid 13653's > >>> current scheduling priority: 0 > >>> > >>> let me see what happens when running as root :) > >>> > >>> > >>> > >>> Il 29/09/2012 18:35, Ulrich Block ha scritto: > >>>> Am 29.09.2012 18:30, schrieb Marco Padovan: > >>>>> Hi, thanks for your reply. > >>>>> > >>>>> In my case it is not srcds_run doing that, it's srcds_linux that > >>>>> does something. > >>>>> > >>>>> "priority" changes a few seconds after srcds_linux has started > >>>>> (right after "create 4 threads" gets printed into the console log). > >>>>> > >>>>> In my case it's changing its own scheduling parameters moving from > >>>>> the SCHED_OTHER into SCHED_RR. > >>>> Which kernel are you using? And most importantly which user runs > >>>> the server? I saw such a behaviour when someone was running > >>>> everything with root. > >>>> > >>>> A normal system user should not have the permission to change the > >>>> prio or the scheduling. The root user does. > >>>> > >>>> > >>>> > >>>> _______________________________________________ > >>>> To unsubscribe, edit your list preferences, or view the list > >>>> archives, please visit: > >>>> https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds_linux > >> _______________________________________________ > >> To unsubscribe, edit your list preferences, or view the list archives, > please visit: > >> https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds_linux > > _______________________________________________ > > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > > https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds_linux > > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds_linux > > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds_linux > _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds_linux
