reducing size of apache instances

Adam Vande More amvandemore at
Fri Sep 11 18:31:20 UTC 2009

On Fri, Sep 11, 2009 at 1:05 PM, Linda Messerschmidt <
linda.messerschmidt at> wrote:

> On Fri, Sep 11, 2009 at 1:48 PM, John Almberg <jalmberg at>
> wrote:
> > As a sanity check... I've been studying these processes all morning. When
> I
> > use 'top', the column RES shows the amount of RAM used for the process,
> > correct? This is the value I'd like to get down.
> How many Apache processes are involved, total?  Because I'm really not
> sure how much success you're going to have with this.  You're at 22mb
> already (by comparison mine are 44mb *without* mod_php).  How much
> improvement are you looking for?  A couple of megs?
> Unless there are tens of thousands of processes, buying a couple of
> gigs of RAM is probably the most time and cost effective solution.
> Also keep in mind that a lot of the RES is the configuration, which
> isn't going to change at all when you disable modules. (Unless you
> change it.)
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Not to mention the RES column is a horribly inaccurate method of calculating
mem usage by application.  They don't run 18 MB each that is shared mem.

Adam Vande More

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