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I installed Xcache on a Debian 6 server, however despite it being activated, no pages are being cached.

Apache is installed via the repos, however PHP 5.4 and xcache are compiled from source. PHP is running as an Apache module.

When I view the diagnostics page in the admin section, it says that 'Enabling PHP Cacher' status is 'Error' as no pages have been cached and that I should set xcache.cacher to 'On', which I already have.

PHP output:

# php -v PHP 5.4.10 (cli) (built: Feb 13 2013 16:50:20) Copyright (c) 1997-2012 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2012 Zend Technologies with XCache v3.0.1, Copyright (c) 2005-2013, by mOo with XCache Cacher v3.0.1, Copyright (c) 2005-2013, by mOo 

In addition, phpinfo shows that the XCache Cacher Module is enabled.

My xcache settings:

[xcache] xcache.shm_scheme = "mmap" xcache.size = 64M xcache.count = 1 xcache.slots = 8K xcache.ttl = 0 xcache.gc_interval = 0 xcache.var_size = 4M xcache.var_count = 1 xcache.var_slots = 8K xcache.var_ttl = 0 xcache.var_maxttl = 0 xcache.var_gc_interval = 300 xcache.var_namespace_mode = 0 xcache.var_namespace = "" xcache.readonly_protection = Off xcache.mmap_path = "/dev/zero" xcache.coredump_directory = "" xcache.coredump_type = 0 xcache.disable_on_crash = Off xcache.experimental = Off xcache.cacher = On xcache.stat = On xcache.optimizer = On [xcache.coverager] xcache.coverager = Off xcache.coverager_autostart = On xcache.coveragedump_directory = "" 

I'm a little stuck. There's nothing in the .htaccess file that would disable it, same goes for inside the VirtualHosts block. I'm not sure where to look next to solve this problem, as from what I can see, it should be working.

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  • Anything in any of Apache's error logs? Commented May 7, 2013 at 11:18
  • @Flup unfortunately not :( Commented May 7, 2013 at 11:25

1 Answer 1

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I noticed the same problem when xcache.mmap_path wasn't set — it looks like your's is set but make sure it's a writable directory. In my case (on OSX) I'm using:

xcache.mmap_path = /tmp/xcache 
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    Ey, during subsequent testing after I posted this question I found that on Debian I had to set the directory to something other than /dev/zero, however the config worked on a Centos box unaltered. Just one of those things, I suppose. Commented Nov 20, 2013 at 11:12

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