Gernot, is there anything suspicious in /var/adm/messages?
Michael On Thu, Oct 20, 2011 at 20:07, Michael Stapleton <michael.staple...@techsologic.com> wrote: > That rules out userland. > > Sched tells me that it is not a user process. If kernel code is > executing on a cpu, tools will report the sched process. The count was > how many times the process was taken off the CPU while dtrace was > running. > > > > Lets see what kernel code is running the most: > > #dtrace -n 'sched:::off-cpu { @[stack()]=count()}' > > #dtrace -n 'profile-1001 { @[stack()] = count() }' > > > > On Thu, 2011-10-20 at 19:52 +0200, Gernot Wolf wrote: > >> Yeah, I've been able to run this diagnostics on another OI box (at my >> office, so much for OI not being used in production ;)), and noticed >> that there were several values that were quite different. I just don't >> have any idea on the meaning of this figures... >> >> Anyway, here are the results of the dtrace command (I executed the >> command twice, hence two result sets): >> >> gernot@tintenfass:~# dtrace -n 'sched:::off-cpu { @[execname]=count()}' >> dtrace: description 'sched:::off-cpu ' matched 3 probes >> ^C >> >> ipmgmtd 1 >> gconfd-2 2 >> gnome-settings-d 2 >> idmapd 2 >> inetd 2 >> miniserv.pl 2 >> netcfgd 2 >> nscd 2 >> ospm-applet 2 >> ssh-agent 2 >> sshd 2 >> svc.startd 2 >> intrd 3 >> afpd 4 >> mdnsd 4 >> gnome-power-mana 5 >> clock-applet 7 >> sendmail 7 >> xscreensaver 7 >> fmd 9 >> fsflush 11 >> ntpd 11 >> updatemanagernot 13 >> isapython2.6 14 >> devfsadm 20 >> gnome-terminal 20 >> dtrace 23 >> mixer_applet2 25 >> smbd 39 >> nwam-manager 60 >> svc.configd 79 >> Xorg 100 >> sched 394078 >> >> gernot@tintenfass:~# dtrace -n 'sched:::off-cpu { @[execname]=count()}' >> dtrace: description 'sched:::off-cpu ' matched 3 probes >> ^C >> >> automountd 1 >> ipmgmtd 1 >> idmapd 2 >> in.routed 2 >> init 2 >> miniserv.pl 2 >> netcfgd 2 >> ssh-agent 2 >> sshd 2 >> svc.startd 2 >> fmd 3 >> hald 3 >> inetd 3 >> intrd 3 >> hald-addon-acpi 4 >> nscd 4 >> gnome-power-mana 5 >> sendmail 5 >> mdnsd 6 >> devfsadm 8 >> xscreensaver 9 >> fsflush 10 >> ntpd 14 >> updatemanagernot 16 >> mixer_applet2 21 >> isapython2.6 22 >> dtrace 24 >> gnome-terminal 24 >> smbd 39 >> nwam-manager 58 >> zpool-rpool 65 >> svc.configd 79 >> Xorg 82 >> sched 369939 >> >> So, quite obviously there is one executable standing out here, "sched", >> now what's the meaning of this figures? >> >> Regards, >> Gernot Wolf >> >> >> Am 20.10.11 19:22, schrieb Michael Stapleton: >> > Hi Gernot, >> > >> > You have a high context switch rate. >> > >> > try >> > #dtrace -n 'sched:::off-cpu { @[execname]=count()}' >> > >> > For a few seconds to see if you can get the name of and executable. >> > >> > Mike >> > On Thu, 2011-10-20 at 18:44 +0200, Gernot Wolf wrote: >> > >> >> Hello all, >> >> >> >> I have a machine here at my home running OpenIndiana oi_151a, which >> >> serves as a NAS on my home network. The original install was OpenSolaris >> >> 2009.6 which was later upgraded to snv_134b, and recently to oi_151a. >> >> >> >> So far this OSOL (now OI) box has performed excellently, with one major >> >> exception: Sometimes, after a reboot, the cpu load was about 50-60%, >> >> although the system was doing nothing. Until recently, another reboot >> >> solved the issue. >> >> >> >> This does not work any longer. The system has always a cpu load of >> >> 50-60% when idle (and higher of course when there is actually some work >> >> to do). >> >> >> >> I've already googled the symptoms. This didn't turn up very much useful >> >> info, and the few things I found didn't apply to my problem. Most >> >> noticably was this problem which could be solved by disabling cpupm in >> >> /etc/power.conf, but trying that didn't show any effect on my system. >> >> >> >> So I'm finally out of my depth. I have to admit that my knowledge of >> >> Unix is superficial at best, so I decided to try looking for help here. >> >> >> >> I've run several diagnostic commands like top, powertop, lockstat etc. >> >> and attached the results to this email (I've zipped the results of kstat >> >> because they were>1MB). >> >> >> >> One important thing is that when I boot into the oi_151a live dvd >> >> instead of booting into the installed system, I also get the high cpu >> >> load. I mention this because I have installed several things on my OI >> >> box like vsftpd, svn, netstat etc. I first thought that this problem >> >> might be caused by some of this extra stuff, but getting the same system >> >> when booting the live dvd ruled that out (I think). >> >> >> >> The machine is a custom build medium tower: >> >> S-775 Intel DG965WHMKR ATX mainbord >> >> Intel Core 2 Duo E4300 CPU 1.8GHz >> >> 1x IDE DVD recorder >> >> 1x IDE HD 200GB (serves as system drive) >> >> 6x SATA II 1.5TB HD (configured as zfs raidz2 array) >> >> >> >> I have to solve this problem. Although the system runs fine and >> >> absolutely serves it's purpose, having the cpu at 50-60% load constantly >> >> is a waste of energy and surely a rather unhealthy stress on the hardware. >> >> >> >> Anyone any ideas...? >> >> >> >> Regards, >> >> Gernot Wolf >> >> _______________________________________________ >> >> OpenIndiana-discuss mailing list >> >> OpenIndiana-discuss@openindiana.org >> >> http://openindiana.org/mailman/listinfo/openindiana-discuss >> > >> > >> > _______________________________________________ >> > OpenIndiana-discuss mailing list >> > OpenIndiana-discuss@openindiana.org >> > http://openindiana.org/mailman/listinfo/openindiana-discuss >> > >> >> _______________________________________________ >> OpenIndiana-discuss mailing list >> OpenIndiana-discuss@openindiana.org >> http://openindiana.org/mailman/listinfo/openindiana-discuss > > > _______________________________________________ > OpenIndiana-discuss mailing list > OpenIndiana-discuss@openindiana.org > http://openindiana.org/mailman/listinfo/openindiana-discuss > -- Michael Schuster http://recursiveramblings.wordpress.com/ _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss