Sunday, May 8, 2005

Potential server problems

Twice today, my server got unresponsive where I had to turn it off, and then turn it back on.  When it was in this state, I noticed that the hard drive was thrashing. After rebooting it the first time, I noticed that apache died because it wasn't able to allocate memory.

I think that one of the processes is leaking memory so bad that it eventually uses all of the swap space.  I don't think that this problem is caused by anything external, as I can see a log of all of the connections though my firewall.  Now I just need to find out what is leaking the memory.

Update:  I found out what causing the problem.  I had installed version 1.3.0 of munin.  Since I had a cron job that got the statistics every 5 minutes and it appears that some of the processes were not finishing, so eventually the computer would run out of memory.    I updated munin to 1.3.2, and it doesn't seem to have this problem.

1 comment:

  1. I feel for you! Had a similar issue this morning in that our mail web/email server was giving erratic responses due to insufficient memory.
    Only real problem being that nothing was touched in the way of changes! Turned out to be a corrupt email that was causing one of our scripts to go crazy.
    Fun :)


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