xcache problem, segmentation fault

[Zion Ahead]

Trying to enable xcache on my cpanel, centos server (suphp *not* enabled)

Followed this guideline
http://www.eth0.us/xcache

Xcache shows up in php -m output, however I get this output as well

root@server [/tmp]# php -v
PHP 5.2.8 (cli) (built: Jan  5 2009 16:23:03)
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
    with the ionCube PHP Loader v3.1.34, Copyright (c) 2002-2009, by ionCube Ltd., and
    with Zend Extension Manager v1.2.2, Copyright (c) 2003-2007, by Zend Technologies
    with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies
Segmentation fault (core dumped)

In the /usr/local/lib/php.ini file I had this portion setup before the Zend portion...

[xcache-common]

extension = xcache.so

[xcache.admin]
xcache.admin.auth = On
xcache.admin.user = ""
xcache.admin.pass = ""

[xcache]
; ini only settings, all the values here is default unless explained

; select low level shm/allocator scheme implemenation
xcache.shm_scheme = "mmap"

; to disable: xcache.size=0
; to enable : xcache.size=64M etc (any size > 0) and your system mmap allows
xcache.size = 128M

; set to cpu count (cat /proc/cpuinfo |grep -c processor)
xcache.count = 4

; just a hash hints, you can always store count(items) > slots
xcache.slots = 8K

; ttl of the cache item, 0=forever
xcache.ttl = 0

; interval of gc scanning expired items, 0=no scan, other values is in seconds
xcache.gc_interval = 0

; same as aboves but for variable cache
xcache.var_size = 0M
xcache.var_count = 1
xcache.var_slots = 8K
; default ttl
xcache.var_ttl = 0
xcache.var_maxttl = 0
xcache.var_gc_interval = 300

xcache.test = Off
; N/A for /dev/zero
xcache.readonly_protection = Off
; for *nix, xcache.mmap_path is a file path, not directory.
; Use something like "/tmp/xcache" if you want to turn on ReadonlyProtection
; 2 group of php won't share the same /tmp/xcache
; for win32, xcache.mmap_path=anonymous map name, not file path
xcache.mmap_path = "/dev/zero"

; leave it blank(disabled) or "/tmp/phpcore/"
; make sure it's writable by php (without checking open_basedir)
xcache.coredump_directory = ""

; per request settings
xcache.cacher = On
xcache.stat = On
xcache.optimizer = Off

[xcache.coverager]
; per request settings
; enable coverage data collecting for xcache.coveragedump_directory and xcache_coverager_start/stop/get/clean() functions (will hurt executing performance)
xcache.coverager = Off

; ini only settings
; make sure it's readable (care open_basedir) by coverage viewer script
; requires xcache.coverager=On
xcache.coveragedump_directory = ""

[Zend]

zend_extension_manager.optimizer=/usr/local/Zend/lib/Optimizer-3.3.3
zend_extension_manager.optimizer_ts=/usr/local/Zend/lib/Optimizer_TS-3.3.3
zend_optimizer.version=3.3.3

extension=pdo.so
extension=pdo_sqlite.so
extension=sqlite.so
extension=pdo_mysql.so

allow_url_include = On

; Memcache Section
extension = memcache.so
memcache.allow_failover = 0

When I search for "zend_extension" this is the result:

; Directory in which the loadable extensions (modules) reside.
extension_dir = "/usr/local/lib/php/extensions/no-debug-non-zts-20060613"
zend_extension="/usr/local/IonCube/ioncube_loader_lin_5.2.so"
zend_extension_ts="/usr/local/IonCube/ioncube_loader_lin_5.2_ts.so"
;zend_extension="/usr/local/lib/php/extensions/no-debug-non-zts-20060613/xcache.so"

If I move the xcache line to the first line, before the ioncube one, I get this error:

root@server [/usr/local/lib/php/extensions/no-debug-non-zts-20060613]# php -m
Segmentation fault (core dumped)

root@server [/usr/local/lib/php/extensions/no-debug-non-zts-20060613]# ls -lh
total 290M
drwxr-xr-x 2 root root 4.0K May 11 11:48 ./
drwxr-xr-x 5 root root 4.0K Sep 17 2007 ../
-rw------- 1 root root 144M May 11 11:48 core.9588
-rw------- 1 root root 144M May 11 11:48 core.9592
-rwxr-xr-x 1 root root 495K Jan 5 16:34 eaccelerator.so*
-rw-r--r-- 1 root root 3.1K Jan 5 22:04 error_log
-rwxr-xr-x 1 root root 142K Sep 17 2007 mailparse.so*
-rwxr-xr-x 1 root root 313K Jan 5 20:43 memcache.so*
-rwxr-xr-x 1 root root 124K Jan 5 16:23 pdo_mysql.so*
-rwxr-xr-x 1 root root 265K Jan 5 16:23 pdo.so*
-rwxr-xr-x 1 root root 1.4M Jan 5 16:23 pdo_sqlite.so*
-rwxr-xr-x 1 root root 989K Jan 5 16:23 sqlite.so*
-rwxr-xr-x 1 root root 323K May 11 11:31 xcache.so*

My config:

PHP 5.2.8
Zend Opt 3.3.3
suphp disabled
Apache 2.2

[StingRay2k01]

You didn't mention the MPM type of Apache, is it Prefork or Worker?
PHP is run with mod_php then?


Either way, make sure zend stuff comes last. I notice a few others there that come after your zend statements too, try moving them before zend.

If you are using prefork, then your line should look like.
zend_extension = "/usr/local/lib/php/extensions/no-debug-non-zts-20060613/xcache.so"

For example here's mine, but it's using Worker MPM, so it's threaded.

[Zend]
zend_extension_ts = "/usr/local/lib/php/extensions/no-debug-zts-20060613/xcache.so"
zend_extension_ts = "/usr/local/Zend/lib/ZendExtensionManager_TS.so"
zend_extension_manager.optimizer = "/usr/local/Zend/lib/Optimizer-3.3.3"
zend_extension_manager.optimizer_ts = "/usr/local/Zend/lib/Optimizer_TS-3.3.3"
zend_optimizer.version = "3.3.3"
zend_extension = "/usr/local/Zend/lib/ZendExtensionManager.so"

[forlinuxsupport]

look here - #200 (Compatability issue with ZendOptimizer) – XCache

You have to list xcache higher up than zend stuff in php.ini

just make sure all lines starting zend are below xcache..

see if that works now.