[Phpwm] Problems with live Silverstripe website (httpd spawing proceses, high CPU)

[Adi]

So Pete, what are your new settings? If you don't mind telling which website
are you talking about that someone is scraping 1000 pages per minute off.

-
Adi
Same one from nzphplist


On Thu, Aug 19, 2010 at 5:15 PM, Pete Graham <petegraham1 at gmail.com> wrote:

> Hi,
>
> I had my systems admin friend help me out on this one. He modified the
> Apache configuration: tuned the prefork mpm. Re-activated keepalive,
> with stricter settings. Also he noticed some IP in India was
> requesting 1000 pages a minute sometimes so blacklisted the IP,
> amongst other things.
>
> Site seems to behaving itself much more now, thankfully.
>
> Pete
>
> On 19 August 2010 12:33, David Goodwin <david at codepoets.co.uk> wrote:
> > On Wed, 2010-08-18 at 17:09 +0100, Pete Graham wrote:
> >> Hi everybody,
> >>
> >> I have a live SilverStripe site I've inherited that I'm experiencing
> >> major problems with. After the site has been running for a while it
> >> starts spawning multiple httpd processes, some taking up huge
> >> percentages of the CPU (these can be seen using top). The site
> >> progressively become more and more unresponsive returning 500 errors
> >> for requests.
> >
> > Is the server running mod_php?
> >
> > Is the server set to kill it's children after N requests, or do children
> > live forever? - is Apache's MaxRequestsPerChild 0 or something else?
> >
> > ( Perhaps it's just some sort of memory leak...? )
> >
> > I'd suggest you make sure error_log is enabled; and check apache's
> > access logs.... perhaps it's possible to identify a request with
> > something going wrong?
> >
> > I'd guess you could 'strace' the apache process that's misbehaving
> > (assuming mod_php); but this might not work; or be at too low a level.
> > I've never tried it myself.
> >
> >
> > David.
> >
> >
> >
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