See http://docs.moodle.org/en/Development:Profiling_PHP for how to set up PHP profiling. It is surprisingly easy.

I apologize if many have answered these questions before, but is there any sub-task for implementing Memcache or possible inclusion of support for Varnish in the new Moodle 2.0 releases? These are almost essential for dynamic sites to take some load off of the system, regardless of how well Moodle runs by itself.

The memcache was just a quick hack solution, the correct way is to cache specific stuff only. We are still trying to fix bugs in 2.0.x, the performance has lower priority, however there should be some significant perf improvements in 2.0.2

Thanks for the quick response. Given that 2.0.2 was supposed to be out the 10th of February (according to tracker), do you happen to know of the timeline that is now being looked at for the 2.0.2 release and then the following releases that Memcache, Varnish, or a RO Database Option will be looked into? Even if its just speculation as I understand nothing is set in stone

Here are a few discussion links with data on Moodle 2.0 performance:

http://moodle.org/mod/forum/discuss.php?d=162045 Moodle performance testing: 1.9 vs. 2.0 (posts from Ruslan Kabalin LUNS Ltd)
http://moodle.org/mod/forum/discuss.php?d=167413 Performance problems Moodle 1.9 vs. 2.0
http://moodle.org/mod/forum/discuss.php?d=171356 Improve performance in moodle 2.0.2
http://moodle.org/mod/forum/discuss.php?d=169619 Performance issue with 2.0

Proposal: http://docs.moodle.org/en/Development:Performace_2.x

This might not be directly related, but I did see a comment on the linked docs page about "ways how to simulate real life workloads." I have a real-life workload which is made extremely more difficult with the m2 file browser: I have to add 100 scorm activities to a moodle site. I upload them to my repo, ftp them, scp, whatever. Now I have to launch the file browser 100 times to browse to each individual zip dir... If I know the URL to the file in the repo, why can't I just paste that into the file browser? Why do I have to click a GUI, wasting precious time, to accomplish the same task which, in 1.9, I could accomplish by pasting in a URL, not even having to launch a file browser? I realize that this is a very big and important change, allows repositories, etc, wonderful, but it's a step backward for anyone with a Web dev background. A fix would make power users very happy.

http://moodle.org/mod/forum/discuss.php?d=175041#p768052

Also, there isn't any way to just open the file browser and browse and copy out the URL directly to a file. If I want to open the file browser, I have to create a resource or an activity which will provide the button to access the file picker.

Getting the URL to a file is extremely useful if the file is multimedia that I want to embed in a "Web page" with other html content, for example. In some cases the alt-click is being hijacked for other options like "download, remove, etc." Where can I just get the URL to the resource? At present I have to add the file as an embed, browse the source, and copy the URL from the object tag in the source. In 1.9 I just browsed the course files, alt-click, and copy link location.

These are things that content developers do a lot.

Hi Amy,

I see your point completely... perhaps if would be a good idea to comment about that in MDL-27197 where other usability issues are being handled?

Ciao

thanks everybody, we can create new meta issue in the future if necessary, closing...