From owner-freebsd-questions@FreeBSD.ORG Sun Apr 25 08:49:12 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B4831106566B for ; Sun, 25 Apr 2010 08:49:12 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (gate6.infracaninophile.co.uk [IPv6:2001:8b0:151:1::1]) by mx1.freebsd.org (Postfix) with ESMTP id F2DD38FC1B for ; Sun, 25 Apr 2010 08:49:11 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [81.187.76.163]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.4/8.14.4) with ESMTP id o3P8n7D7024637 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Sun, 25 Apr 2010 09:49:08 +0100 (BST) (envelope-from m.seaman@infracaninophile.co.uk) Message-ID: <4BD40203.90203@infracaninophile.co.uk> Date: Sun, 25 Apr 2010 09:49:07 +0100 From: Matthew Seaman Organization: Infracaninophile User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <4BD394BC.7030501@netmusician.org> In-Reply-To: <4BD394BC.7030501@netmusician.org> X-Enigmail-Version: 1.0.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.96 at happy-idiot-talk.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_ADSP_ALL, SPF_FAIL autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on happy-idiot-talk.infracaninophile.co.uk Subject: Re: Advice for finding a leaky Apache (probably PHP) process X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Apr 2010 08:49:12 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 25/04/2010 02:02:52, Joe Auty wrote: > I'm wondering if you guys have any general tips on how to find the > Apache process/app that is gobbling up my RAM randomly until my machine > crashes and I'm forced to reboot? I'm tired of staring at top and > working with flimsy hacks such as 10 minute Apache restart cronjobs. > > This seems to start (or worsen) after updating to PHP 5.3, but this is > not happening on my test machine where PHP 5.3 is also installed and the > same apps are used (although not publicly). > > General tips and suggestions are welcome here! You need to divide and conquer. Basically, you've got all of your PHP applications running in one PHP interpreter instance per apache child and you won't be able to tell which is the problem app until you can separate them out. One way of doing that is the simple and obvious method of commenting out each application in turn from the apache config, leaving it running for a while and seeing what happens to memory usage. This is OK only if you're happy to turn off chunks of site functionality while testing. Alternatively, you can set up several different instances of apache, each configured to run one of the php applications and each binding to a different port on the loopback interface. Then use another apache with a bit of mod_proxy or mod_rewrite glue to redirect the queries internally. Or you could replace the front facing apache instance with something like varnish. Finally, it has been suggested else-thread that you contemplate switching to an alternative HTTP daemon like nginx -- in that case, you'ld want to be running your PHP apps under fCGI rather than embedded in the HTTP daemon. Running each different PHP app in a separate fCGI process shouldn't be too hard to set up. While this is a valid alternative configuration for your site, the Scientist in me complains that as an attempt to find out why your PHP apps are misbehaving, there are too many uncontrolled changes for it to be a good diagnostic. Cheers, Matthew - -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkvUAgMACgkQ8Mjk52CukIyCJwCfW+UWZkYxNtTCtEg1NhCkRmTR Mg8AoIYO4qRSswo/3gMWhVqrQAkzv7PX =vFG3 -----END PGP SIGNATURE-----