On Tue, May 02, 2006 at 03:00:10PM +0200, jmp wrote: > hi everyone, > > I'v got an urgent problem with a vserver . > This vserver uses tomcat and the web application failed > some times. (in fact a lots of times when the user is connecting) > I made a ptrace on the process and I can see that there is SIGXCPU > invoked with CPU TIME Limit exceeded.
well, although I have to admit that it very much looks like this is a vserver limit, I am relatively sure that it is not. I suspect that tomcat or apache applies some time limit via this mechanism, effectively limiting the execution time to some reasonable amount http://www.die.net/doc/linux/man/man2/setrlimit.2.html > rt_sigsuspend(~[INT QUIT ABRT BUS SEGV TERM XCPU RTMIN RT_1]) = ? > ERESTARTNOHAND (To be restarted) > --- SIGXCPU (CPU time limit exceeded) @ 0 (0) --- > sigreturn() = ? (mask now ~[INT QUIT ABRT > BUS KILL SEGV TERM STOP RTMIN]) > sigreturn() = ? (mask now [CHLD]) > accept(127, 0xbff5e448, [28]) = ? ERESTARTSYS (To be restarted) > --- SIGPWR (Power failure) @ 0 (0) --- > futex(0x19b7b20, FUTEX_WAKE, 1) = 1 > > > I did not configure any cpu limits. > How can I increase CPU limits on this vserver ? > How can I see the cpu limits ? > > I try : > vlimit -c 346 -H --cpu 30 > vc_set_rlimit(): Invalid argument > vlimit -c 346 --cpu 30 > vc_set_rlimit(): Invalid argument as you can see, we decided not to implement this limit on a per guest basis, because IMHO it doesn't make too much sense to give the entire guest 30 seconds CPU time and then kill it off ... nevertheless, ulimits of this type are supported and will effect each task independantly, but as I said, I'm relatively sure that this is not the case ... HTH, Herbert > vlimit -c 346 -a > RSS N/A N/A inf > NPROC N/A N/A inf > NOFILE N/A N/A inf > MEMLOCK N/A N/A inf > AS N/A N/A inf > vc_get_rlimit(): Invalid argument PS: this might be worth inspecting on our side, which kernel and patch version is it? > LOCKS N/A N/A 0xbffa2e5c00000001 > 18 N/A N/A inf > > > thanks for your help > > jean-marc. > > > > _______________________________________________ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver _______________________________________________ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
