peterjeremy at optushome.com.au
Thu Feb 8 09:33:05 UTC 2007
On 2007-Feb-05 22:08:33 -0000, Neil Doody <neil at mpfspromotions.com> wrote:
>I am having a problem in which apache processes are slowly going off on some
>sort of rampage and I cant trace what is causing it. Basically over time
>httpd processes start hogging 100% cpu and new processes are spawned, until
>the apache server is shutdown these remain at 100% and they increase until
>they bring the server down.
>I was wondering what tools I can use to see exactly what these processes are
>doing, why they are stuck and what are they waiting for?
Specifically for apache, you could try mod-status (/server-status)
with "ExtendedStatus On". This should let you track down the the
General tools would be ktrace and friends to see what syscalls it is
performing. You could also try attaching a debugger and getting a
backtrace. This might give you some idea where to start looking.
If this isn't a totally static website, my initial guess is that one
of the CGI scripts is running amok.
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