On Mon, Jun 15, 2009 at 9:42 AM, James McLean<james.mclean@xxxxxxxxx> wrote: > Hi All, > > Over the weekend I setup a test of APC intending to benchmark a Moodle > installation with various APC settings to see how well I could get it > to perform. I successfully installed Moodle 1.9 and 2.0 under Apache > 2.2.3 (installed via apt on Ubuntu 9.04), and with PHP 5.2.9 compiled > from source. I should note, that Ubuntu had an older version of PHP > installed from apt with Suhosin hardened PHP built in. Moodle 2.0 > required at least PHP 5.2.8, so I uninstalled the original PHP module > before compiling and installing the 5.2.9. > > No issues there; PHP worked well and performance was (mostly) acceptable. > > Progressed onto installing APC, firstly by downloading the APC 3.1.2 > source from PECL and following the usual 'phpize, configure, make, > make install' process which worked as expected, stop and start Apache > and APC was present in my phpinfo();. I started with the reccomended > PHP config exept with error_display turned on and E_ALL | E_STRICT > enabled, and also the reccomended APC config also. > > I copied the 'apc.php' from the source tree to my webroot and changed > the password as suggested. > > The issue arose when I attempted to benchmark my Moodle install with > 'ab' (I realise it only downloads the single page, but it's good > enough for what I need for now though) and the result was no different > to before I had installed APC. View the apc.php page, and the only > page cached is apc.php itself.. Certainly not what I've witnessed in > the past. Then what would happen was if I viewed my seperate info.php > page containing simply the opening PHP tag and a single line with > phpinfo(); in the file - the cache would appear to reset, and it would > firstly not load the info.php into the cache, it would reset the > counter on the apc.php file back to 0. > > Through all of this, there was no errors displayed on the screen and > no errors listed in the Apache error log either. Increased the Apache > log level up to Debug, and no related information was displayed. > Moodle itself worked as expected with no errors, and on a seperate > RHEL installation I have Moodle working with APC and it is caching all > it's files as expected. > > At this point, I thought it may be an issue with the module I compiled > myself. I backed up the module, and allowed PECL to install the > module, it installed 3.0.19. Restarted Apache and verified the version > was as PECL had built and installed. > > This had no effect, and yeilded the same behaviour. > > I'm stumped as to what the issue could be, however I did see this > issue of APC not caching files on an installation of Red Hat > Enterprise Linux in the past - however at the time we assumed it was > an issue with the framework we were using and due to time constraints > simply ran without APC and didn't investigate further. > > Has anyone seen this issue in the past and perhaps even rectified it? > > Any information would be appreciated. As I have not had a response to my question yet, is there anyone who may be able to shed some light on the issue? Last night I also tried some different configure options when building APC but with the same result.. Has anyone seen this behaviour before? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
