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From Graham Leggett <>
Subject Re: Apache memory problems
Date Fri, 28 May 1999 14:48:00 GMT
Jim Jagielski wrote:

> It's possible that the OS itself is having a memory leak. What system
> is this?

Solaris v2.6.

> Usage of child processes will pretty much even out eventually, assuming that no
> process gets a really large "job" to do (this can happen sometimes with PHP,
> esp. if the script is bad and it runs until the limit).


> Try setting MaxRequestPerChild to something lower than what you have.
> That will/should stop the overwhelming of the box (but it won't fix
> the leak, however).

The trouble is that the processes getting stuck problem I am
experiencing still eats up processes, so reducing the
maxrequestsperchild doesn't help.

Unfortunately I am not sure if I am trying to find one bug or a
combination of bugs, the problems I have encountered so far are:

- leaks memory over time, eventually swamping the box.
- processes asked to gracefully restart don't, and get "stuck" trying to
read a request that's not there. (Visit for an example, see processes
marked as "unavailable").
- sometimes (not always) Apache realises the processes are stuck, and
tries to TERM then KILL them.
- otherwise Apache just ignores these processes, spawning new ones to
replace them until MaxClients is reached.

-----------------------------------------		"There's a moon
					over Bourbon Street

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