Performance issue: Apache 2.0.52 & kernel 2.6
All of a sudden cgi were taking up 20 seconds on a machine with no load. I changed back to kernel 2.4 and things went back to normal - cgi were taking about 1 second. I also noticed that mysql went down from 28M to 10M.
Has anyone else seen anything like this?
Running Redhat 9/kernel 2.6 is OK, its upgrading Apache that causes the problem.
When I dig on 2.4 I get a result.
When I dig on 2.6 I get a segfault, until I disable tls.
Maybe apache is doing some sort of DNS thing that it didn't previously and is failing. Try using dig to display the dns for a site and see what happens.
Anyway I could be way off and it could be something completely different. If you have aleady disabled tls then it's not that.