High Performance

This group is dedicated to solutions and approaches for high traffic, high performing Drupal sites. As such, it will deal with a lot of information around the rest of a typical Drupal "stack" -- the operating system, web server, database, and PHP tweaks that combine to support the Drupal application.

This is not a support channel or a place to post bug reports.

If you think you have found a bug, use the issue queue for the appropriate project.

If you need support, see http://drupal.org/support for options.

High performance comparison idea

Posted by artatac on July 3, 2013 at 9:49pm

I have been using Drupal for four years now and still find resource memory optimisation a black art. Most of my sites are low/medium traffic and low/medium complexity. I have on too many occasions struggled with sites slowing to a crawl or white screen of death and used the many suggestions of the community to try and get to the bottom of things, with varying success.

Memcached Optimization

Posted by mbopp on July 2, 2013 at 3:00pm

I have a large website that uses memcached. All users of the website are authenticated (no anonymous users). In addition to users always being authenticated, the content they see is very customized based on user (profile) fields and properties; like social media sites including facebook, linkedin, etc. Also, this site has several thousand users.

D7 'Aggregate and Compress CSS Files' - live site losing styles???

Posted by spessex on June 27, 2013 at 10:07am

Everytime I select 'Aggregate and Compress CSS Files' in D7 Performance settings on my live site I'm instantly losing my styles. However on my local machine this does not happen. Interestingly this only happens on my live site when I have my sub-theme of Bartik selected. If I use the default Bartik theme there is no issue. I've searched Google and found a plethora of possibilities but I still haven't found the solution. If anyone could advise it would greatly appreciated.

Thank you

Stephen

PHP's OPcache and Drupal

Posted by Garrett Albright on June 26, 2013 at 1:05am

The recently released PHP 5.5 introduces a built-in opcode cache solution called, well, OPcache. The same system is also available for some earlier versions of PHP via PECL. The fact that it is shipped with and developed alongside the PHP core means that there shouldn't be any problems in the future with the PHP core introducing functionality that the opcode cache can't handle, as can be the case with third-party systems.

Huge Node Revisions table - what can i do ?

Posted by jggarley on June 24, 2013 at 4:41pm

The node_revisions table in my D6 database is too huge (2.6gb). I don't use node revisions and have turn off node revision per content type. This has resulted to shouting my website down because the database is over its allocated size. Below is the email I just received. I tried deleting old notes using the below query but 0 record deleted

DELETE FROM {node_revisions} nr WHERE nr.vid NOT IN (SELECT n.vid FROM (node) n)');

PHP Variable Hunter & Enhancement Proposals.

Posted by jeoware on June 19, 2013 at 4:29pm

I was honored to present my ideas at the HP meeting last night. Learned a bunch! As a followup I've just added PHP Variable Hunter (PVH) to Sandbox @ https://drupal.org/sandbox/jeoware/2023153. It can be downloaded from https://github.com/jeoware/PHP_Variable_Hunter/ and can be used in any PHP program by changing the extension.

Now, as to feedback, I'm asking for any and all comments, particularly challenges and suggestions of the sequence I should progress. Here's the ideas I presented last night. They are detailed at http://www.idxsoft.com/enhancements.

newrelic & page_manager_node_view

Posted by alexus on June 19, 2013 at 3:15pm

we're using pressflow-6.28 on redhat6.4 w/ php5.3.3, there are two web heads residing behind varnish-3.0.4, web heads doesn't seem like experiencing heavy loads (0.2 15 min).

according to newrelic's dashboard /page_manager_node_view is:

most time consuming (97.1%)
slowest average response time (2050ms)
apdex most dissatisfying (95.6%)
highest throughput (14.4rpm)

Anyone running their Drupal on the new Akiban db? What is your experience?

Posted by giorgio79 on June 15, 2013 at 5:39pm

I would like to migrate from mysql to Akiban, has anyone done this already?
Some links
http://akiban.com
http://posulliv.github.io/2012/12/14/drupal-7-install-akiban/
https://portland2013.drupal.org/session/taming-monster-drupal-queries-ak...

Phalcon, the fastest php framework delivered as a c extension should replace symfony in d9?

Posted by giorgio79 on June 15, 2013 at 6:26am

Just found out about phalcon
http://phalconphp.com/
http://systemsarchitect.net/performance-benchmark-of-popular-php-framewo...
Perhaps, drupal could replace symfony with phalcon for d9 :)

PS: A CMS for this framework is happening http://phalconeye.com/

Random APC findings

Posted by kristofferwiklund on June 12, 2013 at 8:41am

I was playing with APC object cache and was wondering if the key length affected the object size stored in APC. I Google and didn't find anything.

So I did some testing myself and it seems that the size of 656b per object is consistent when both key less that ~400 character and value is also less than ~400 character.

So doing some optimization/shorting of the key is not necessary if you have a key shorter than ~400 character.

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