'MaxRequestsPerChild' doesn't always restart the child when the request limit is reached

[ snip description of memory leak when using httpd - see
  http://subversion.tigris.org/issues/show_bug.cgi?id=3084
  for details ]

> I have found
> something that seems to provide an adequate workaround for now:
>
> MaxRequestsPerChild 1024
>
> in the httpd.conf kills the server and restarts it
> sufficiently often to prevent the out-of-memory condition.
> *As far as I can tell*, it also doesn't disturb any
> Subversion operations that are in progress, which is much
> better than a scheduled restart.

Now I find that "MaxRequestsPerChild" doesn't always restart
the child process when the request limit is reached - the
child process then continues until it crashes at 2G memory
usage.

I've seen this three times in the last week. I spotted one
unusually long-running child process and ran "svn ls" in a
shell for-loop, without the process being restarted after 1000
requests (with MaxRequestsPerChild set to 512), so I know it
isn't always working as expected.

So bang goes my workaround. Anyone else seen this? I guess it
might be an Apache issue rather than a Subversion issue, but I
couldn't find any mention of it in the Apache archives.

Using CollabNet Subversion 1.5.0 on Windows Server 2008.

regards,

--
Jon Ashley
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