I captured a load spike graphically with ttyload in case anyone want s to see what it looks like:
After hanging around at 0.50 load, it spiked up to 2.52 in less than 10 seconds. The only active processes before and during the spike were asterisk-related. below is a 10 second interval 12 minute snapshot of the load on my asterisk machine VICIast2 0.09, 0.24, 0.29 10:40:01 ttyload, v0.4.4 3.00 2.90 2.81 2.71 2.61 2.52 * 2.42 2.32 2.23 2.13 * 2.03 1.94 1.84 * 1.74 1.65 * 1.55 1.45 * 1.35 1.26 * 1.16 * 1.06 0.97 * 0.87 * 0.77 ***** * 0.68 ***** * 0.58 ****** * 0.48 *************** ********** * ** 0.39 * ******************************************** 0.29 ****** *** * ********* ********* 0.19 **** * *********** * **** 0.10 * ************ * 0.00 ^10:32^10:33^10:34^10:35^10:36^10:37^10:38^10:39^10:4 MATT--- -----Original Message----- From: Patrick [mailto:[EMAIL PROTECTED] Sent: Monday, February 23, 2004 1:19 PM To: [EMAIL PROTECTED] Subject: RE: [Asterisk-Users] Processor load spikes On Mon, 2004-02-23 at 18:42, mattf wrote: > Thanks for the response. I plan on trying Slackware on my backup/test > asterisk server when I have a new backup server ready in a few weeks. I've > noticed in some database machine testing that Slackware starts up in about > half the time of RedHat and doesn't have all of that Redhat junk either. > I'll post my results running Slackware after I've had time to test it. > > When I said crashed I meant that the whole operating system crashed, so no > backtrace possible. > > Thanks, > > MATT--- Hi Matt, My RH9 box has never crashed although on some others running RH9 I've seen load spikes also. The only similar situation I vaguely remember from long ago was either related to using a T400P/E400P card on a motherboard with the incorrect pci slot voltage or to a power supply that couldn't cope with the extra load. Don't recall exactly anymore so could be wrong but maybe worth keeping in mind. I always do the following on a RH9 box: * export LD_ASSUME_KERNEL=2.4.1 before you start asterisk. Alternatively you can build a plain vanilla 2.4.2x kernel from kernel.org and use that one * turn off all unnecessary cron jobs. updatedb can have quite a field day with eating up I/O and keeping disks pretty busy and iirc you may want to turn off the fam service also * turn off all unnecessary services and remove all unnecessary modules from /etc/modules.conf If you find the cause, please let us know. Good luck, Patrick _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
