Re: some apache processes running away with cpu

[christos%zoulas.com@localhost (Christos Zoulas)]

On Mar 19,  5:56pm, al%familysafeinternet.com@localhost (Al Zick) wrote:
-- Subject: Re: some apache processes running away with cpu

| Hi,
| 
| On Mar 17, 2013, at 8:51 PM, Christos Zoulas wrote:
| 
| > In article <Pine.NEB.4.64.1303171818010.3664%agnus.datazap.net@localhost>,
| > Al  <al%familysafeinternet.com@localhost> wrote:
| >> Hi,
| >>
| >> I have 2 system running NetBSD 5.1.2. They both have an issue with  
| >> some
| >> apache processes using all available cpu. If I kill those process or
| >> restart apache then the problem goes away for a little while. Is this
| >> something that anyone else has already dealt with? Is there a fix  
| >> for it?
| >
| > ktrace them...
| 
| I had to wait until a process started using all available cpu again.  
| It is so random when it happens. Sometimes there are a bunch of  
| processes and other times I have to wait all day.
| 
| I ran ktrace -p {process id}, it creates ktrace.out, but there is  
| nothing in the file. However, when I restarted apache it did put  
| something in ktrace.out. Here is the output from kdump:

So it is looping without calling system calls (if this output is correct).
Attach with gdb to the running process and get a stack trace from there.

christos