On Wed, Mar 19, 2008 at 10:42 AM, Evert Lammerts <evert.lammerts@xxxxxxxxx> wrote: > And how about this: after benchmarking apache with ab -c 100 -n 10000 an > apache process is left in the process list for a while with <defunct> > appended - it disappears after a minute or so. > > If I benchmark the server from two different machines with two different > requests, apache locks up, the benchmarks time out and the server is > left with a process list filled with apache2 processes that need to be > killed with killall. It does seem to be a concurrency problem but I > can't figure out where it comes from. Any help would be great! Session locking? This is almost surely some kind of lock contention in your php code. You can grab a live backtrace of a "stuck" process to see where the problem is: http://httpd.apache.org/dev/debugging.html#backtrace Joshua. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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