It looks like a deadlock was causing this problem. I originally ruled that out because we use Seppuku and it should have killed the instance. But it is clearly a deadlock and seppuku is not working properly. Even though the CPU was not maxing out it was causing other problems (possibly opening too many files)
Now I just need to find the problem in the code :-) On 4/18/07 9:29 PM, "David Haggerty" <[EMAIL PROTECTED]> wrote: > We recently have suddenly been having problems with Apache (running on a > separate box) becoming completely unresponsive and one of our three > application servers not responding to wotaskd according to monitor. The > problem seems to move from one server to another and randomly happen every > 6-8 hours. > > Here are some things that I tried: > > 1. Checked all of the servers to see if there was high CPU usage (this > seems to stop wotaskd from working). All of the servers were below 0.5 load > (and they are dual processors). > > 2. Tried connecting to the server that according to WOMonitor is not > responding. /cgi-bin/WebObjects/WOAdaptorInfo?user+password and > /cgi-bin/WebObjects/wotaskd.woa/wa/woconfig both returned expected > responses. > > 3. I of course tried to restart wotaskd and apache. It came back up for a > few seconds and then the same problem happened. > > 4. We usually explicitly reference the servers in the Apache config: > WebObjectsConfig > http://woapp1.yfu.org:1085,http://woapp3.yfu.org:1085,http://woapp4.yfu.org: > 1085 10 > > Instead I merged all of the /wa/woconfig files to statically reference the > instances. It created the woconfig file with no problem but the same > problem of no response continued. > > I could only get the site up again by removing the server that womonitor > said was unresponsive out of the apache config file anre restarting apache. > > Any ideas on what is locking up causing Apache to hang and wotaskd to > apparently half respond? > > Thanks, > David > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-deploy mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/webobjects-deploy/haggerty%40yfu.org > > This email sent to [EMAIL PROTECTED] _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-deploy mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-deploy/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
