Your message dated Mon, 15 Nov 2010 19:35:03 +0000
with message-id <[email protected]>
and subject line Bug#595276: fixed in libapache2-mod-fcgid 1:2.3.6-1
has caused the Debian Bug report #595276,
regarding libapache2-mod-fcgid: Spawns a new PHP interpreter for each request
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
595276: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=595276
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libapache2-mod-fcgid
Version: 1:2.3.5-2
Severity: grave
Justification: renders package unusable
I am currently happily using mod_fcgid on a system running lenny
(version 2.2). When testing version 2.3.5 of the module I found that it
seems to spawn new FastCGI servers a lot, and ignores any limits that I
have configured.
First, the packages I'm testing with:
ii apache2-mpm-worker 2.2.9-10+lenny8 Apache HTTP Server - high speed
threaded model
ii libapache2-mod-fcgid 1:2.3.5-2 an alternative module compat with
mod_fastcgi
ii php5-cgi 5.2.6.dfsg.1-1+lenny server-side, HTML-embedded
scripting language (CGI binar
In my main Apache configuration, I have the following directive:
DefaultMaxClassProcessCount 5
In the .htaccess file for my test site, I have:
AddHandler fcgid-script .php
FCGIWrapper /srv/www/test.example/cgi-bin/php5 .php
The wrapper script is quite simple; it only exists to work around mod_suexec's
uid/gid match
checks:
#!/bin/sh
set -e
exec /usr/lib/cgi-bin/php5
So, having set this up, I run 'ab -c 15 -n 500
http://test.example.com/test.php'. This results in hundreds of PHP
processes being spawned...
$ pstree -u $(</var/run/apache2.pid)
apache2─┬─apache2(www-data)
├─apache2(www-data)───335*[php5(www-test)]
└─2*[apache2(www-data)───26*[{apache2}]]
... and these log messages:
[Thu Sep 02 16:47:47 2010] [error] (24)Too many open files: mod_fcgid: couldn't
set child process attributes: /var/lib/apache2/fcgid/sock/13843.335
[Thu Sep 02 16:47:47 2010] [warn] (24)Too many open files: mod_fcgid: spawn
process /srv/www/test.example/public_html/test.php error
With version 1:2.2-1 of the module, mod_fcgid correctly stops spawning
at 5 processes. Even if I remove the DefaultMaxProcessCount directive,
the same stress test only causes 11 php5 processes to be spawned.
I have tried to debug this but don't have the complete answer. mod_fcgid
calls the apply_free_procnode function to look for an existing spawned
process to handle a request. This search always seems to fail,
because the share_grp_id seems to change for every request. Hence,
apply_free_procnode returns NULL and a new process is spawned for each
request.
This also explains why the maximum process count is not obeyed:
the is_spawn_allowed function does a similar search, the mismatch for
which causes it to assume that there are no existing processes that will
handle the request, so it always returns 1.
Unfortunately I don't really know what the share_grp_id number is, or
why it changes for each request. :(
--- End Message ---
--- Begin Message ---
Source: libapache2-mod-fcgid
Source-Version: 1:2.3.6-1
We believe that the bug you reported is fixed in the latest version of
libapache2-mod-fcgid, which is due to be installed in the Debian FTP archive:
libapache2-mod-fcgid-dbg_2.3.6-1_amd64.deb
to main/liba/libapache2-mod-fcgid/libapache2-mod-fcgid-dbg_2.3.6-1_amd64.deb
libapache2-mod-fcgid_2.3.6-1.diff.gz
to main/liba/libapache2-mod-fcgid/libapache2-mod-fcgid_2.3.6-1.diff.gz
libapache2-mod-fcgid_2.3.6-1.dsc
to main/liba/libapache2-mod-fcgid/libapache2-mod-fcgid_2.3.6-1.dsc
libapache2-mod-fcgid_2.3.6-1_amd64.deb
to main/liba/libapache2-mod-fcgid/libapache2-mod-fcgid_2.3.6-1_amd64.deb
libapache2-mod-fcgid_2.3.6.orig.tar.gz
to main/liba/libapache2-mod-fcgid/libapache2-mod-fcgid_2.3.6.orig.tar.gz
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Tatsuki Sugiura <[email protected]> (supplier of updated libapache2-mod-fcgid
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Thu, 11 Nov 2010 02:48:54 +0900
Source: libapache2-mod-fcgid
Binary: libapache2-mod-fcgid libapache2-mod-fcgid-dbg
Architecture: source amd64
Version: 1:2.3.6-1
Distribution: unstable
Urgency: low
Maintainer: Tatsuki Sugiura <[email protected]>
Changed-By: Tatsuki Sugiura <[email protected]>
Description:
libapache2-mod-fcgid - an alternative module compat with mod_fastcgi
libapache2-mod-fcgid-dbg - debugging symbols for mod_fcgid
Closes: 595276
Changes:
libapache2-mod-fcgid (1:2.3.6-1) unstable; urgency=low
.
* New upstream release (Closes: #595276)
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