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Ticket Resolution Summary Owner Reporter
#51 PHP v5.2.3 coredumps if using xcache r272 on pfSense HEAD moo DanielSHaischt
Description

At pfSense we are currently trying to integrate Xcache together with PHP 5.2.0. Unfortunatly XCache behaves quite unstable and causes lots of core dumps.

Disabling XCache, solves these issues.

I was able to track it down to the fact, that the following page allways results in a HTTP 500 if beeing saved and if using Xcache:

http://pfsense.com/cgi-bin/cvsweb.cgi/pfSense/usr/local/www/system_advanced.php?rev=1.191;content-type=text%2Fx-cvsweb-markup

If trying to save the above page using EAccelerator I do not get a HTTP 500.

I even tried to use XCache v1.1.0 but the issue remains.

Enabled/Used? modules (in that order):

# add additional extensions below
extension=xcache.so
#extension=xdebug.so
extension=radius.so
#extension=suhosin.so
#extension=uuid.so

# standard PHP extension
extension=bz2.so
extension=bcmath.so
extension=ctype.so
extension=curl.so
extension=gettext.so
extension=mbstring.so
extension=pcntl.so
extension=posix.so
extension=session.so
extension=shmop.so
extension=sysvmsg.so
extension=sysvsem.so
extension=sysvshm.so
extension=tokenizer.so
extension=xml.so
extension=simplexml.so
extension=zlib.so

XCache config:

[xcache]
xcache.mmap_path = "/tmp/xcache"
xcache.cacher = On
xcache.size = 6M
xcache.stat = On
xcache.optimizer = On
auto_globals_jit = Off

#52 fixed Problem with adodb when use pdo_mysql driver moo safari
Description

Code:

<?
require_once(dirname(__FILE__).'/adodb/adodb-exceptions.inc.php');
require_once(dirname(__FILE__).'/adodb/adodb.inc.php');

echo "<BR>before";
$conn =& NewADOConnection("pdo_mysql://user:pwd@localhost/dbname?persist");
var_dump($conn);
?>

When not use xCache, will see "before" and the dump of $conn value.
When use xCache, see "before" only; change connection type to mysql/mysqli, it worked again.
No error found in apache/php log.

I guess that xCache has problem when compiling/caching file adodb-pdo.inc.php or adodb-pdo_mysql.inc.php. When the error happened, the file adodb-pdo.inc.php was compiled/cached, but adodb-pdo_mysql.inc.php was not.

This bug also happened with eaccelerator, wonder why? (use the same code/idea???); but worked fine with APC.

#53 worksforme 500 error with Wordpress moo johnleach
Description

Hi, I'm seeing a 500 error returned in Wordpress. It is fixed with either a restart of the php fastcgi processes, or clearing the xcache cache from the xcache admin page.

It is not with all Wordpress pages, so far I've seen it when posting a comment. Posting comments works fine for a few hours/days then consistently returns a 500 error.

This is with php5-cgi 5.1.2-1ubuntu3.4 package on Ubuntu Dapper running as a fastcgi process under lighttpd. It's with xcache 1.1.0 compiled from source (and observed from at least xcache trunk svn r262).

I get no error output from php (to the error_log or php stderr) when accessing the broken page (though I know php error logging to be working).

I think the php script causing the problem is wp-comments-post.php but I've got a couple of comment related plugins installed, such as Akismet and a threaded comments plugin.

I've got other Wordpress installations on the same box which *reportedly* had the same problem (but at different times), though I've not seen it myself.

I'm getting no coredump on the error.

root@mule:~# gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--program-suffix=-4.0 --enable-__cxa_atexit --enable-clocale=gnu
--enable-libstdcxx-debug --enable-java-awt=gtk-default
--enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre
--enable-mpfr --disable-werror --with-tune=pentium4
--enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)

root@mule:~# php-cgi -v
PHP 5.1.2 (cgi-fcgi) (built: Nov  2 2006 12:24:48)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies
    with XCache v1.1.0, Copyright (c) 2005-2006, by mOo
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