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.

mikeytown2's picture

MySQL Transaction Isolation Level with InnoDB

Has anyone ran Drupal with the Transaction Isolation Level set to READ UNCOMMITTED? REPEATABLE READ is the default setting, but I think for 99% of the sites out there using dirty reads seems like it would be very helpful.

How to set this in my.conf or via SQL command:
transaction-isolation = READ-UNCOMMITTED

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jvieille's picture

Server seems slow - where to start?

I have 2 quite similar servers

1) i7-930 8 cores 2,8GHz, RAM 12M, Deban Lenny / Apache 2.2.9 / PHP2.17 / Virtualmin / APC / Cacherouter
CPU load averages 0.1 (1 min) 0.1 (5 mins) 0.13 (15 mins)
Real memory 11.75 GB total, 2.62 GB used
Internet connexion 1GB/sec
about 10 D6 sites with limited traffic

2) i7-920 8 cores 2,67GHz, RAM 24M, Ububuntu 10.04 / Apache 2.2.14 / PHP5.3.2 / Virtualmin
CPU load averages 0.02 (1 min) 0.03 (5 mins) 0.05 (15 mins)
Real memory 23.58 GB total, 2.55 GB used

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usdrupaljobs's picture

Drupal Developer at New York City - Full-time or Long-term Consulting | IPC

Employment type: 
Full time
Employment type: 
Not allowed

Are you a passionate developer who takes pride in creating extensible and integrated systems with Drupal? Are you ready to experience Drupal in a larger enterprise environment? Does a bigger more challenging system sound better to you?

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socialtalker's picture

applying high performance tools to vps.

This weekend I have wiped my vps clean and am starting all over. i want to put about 18 drupal sites and a couple of wordpress sites on account. i have linode 760 plan. i want to use ubuntu 10.04 lts, i think thats what its called. i am using nginx as the server. but its so confusing trying to know the right tools to add. i believe i can add memcache on the nginx server, but how do i add varnish and apc, or do i need to add all three of those? the documents and different pages i am finding totally confusing. do i use modules to install these tools or do i do i install them at the server?

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christefano's picture

High Performance Drupal meetup in Mar Vista on August 10, 2011

2011-08-10 17:00 - 20:00 America/Los_Angeles
Video: http://blip.tv/ladrupal/episode/5466668  

Caffeinated Drupal at Drupal Cafe Interested in Pressflow, APC, Varnish and memcache? Want to jump from shared or "grid" hosting to VPS or dedicated hosting but aren't sure what to do? Do you just want to get more out of what you currently have and take your Drupal site to the next level?

Meet with friends, have coffee and talk about Drupal performance on the Westside at the Venice Grind between 5-8pm on Thursday, August 10, 2011. Afterward, we might go for dinner somewhere nearby or a stiff drink across the street at the Good Hurt. Last time we went for noodle bowl at Mistuwa. You're invited!

To get last-minute updates, sign up by clicking the Signup button below or stay tuned to the comments on this page (or both!).

When: 5pm to 8pm on Wednesday, August 10, 2011
Where: Venice Grind at 12224 Venice Blvd, Los Angeles, CA 90066
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nublaii's picture

Memcache and empty blocks


We had been running a site for some time with apc+memcache+cacherouter with no problems, when we suddenly we started to get blank pages (I say suddenly because we couldn't find out exactly what was going on).

Well, not blank pages, but more like blank blocks. In the end it looked like memcache was not able to return what it was supposed to and the pages were being drawn pretty badly. Flushing all the caches fixed the issue, but only for a couple of minutes.

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mshmsh5000's picture

Blaze optimization (blaze.io)

Has anyone used this service?


Lots of front-end optimization best practices integrated in a SaaS offering. Just came across it, and evaluating -- would love to hear anyone's experience with the service.

j0k3z's picture

Moved mercury to larger Amazon image but cant get memcache working correctly

I've been running mercury for a year on a small amazon instance. Performance wasnt great so I decided today to move it to a large instance, which is quite a step up.

I started with a fresh Ubuntu 10.04 and installed Apache, Varnish, Memcache, etc. I moved my database over and pointed the IP at the new instance. The site shows up and Varnish is working, but no matter what url I goto it shows me the main page of my website.

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ADLongwell's picture

Drupal Themer and Site Builder | Culture Foundry

Employment type: 
Full time
Employment type: 
Part time
Employment type: 

Hello PDX Drupalists... you may remember Culture Foundry from my talk about scaling kentuckyderby.com to 1 million visitors in an hour at last month's meeting. Culture Foundry is now expanding and have an immediate opening for a top-notch Drupal themer.

About Culture Foundry

If you’re the type of person who’s a fit for the Culture Foundry team, you have your choice of opportunities. What sets this one apart?:

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klaharris's picture

About caching for anonymous users

I've done quite a bit of research on Drupal performance, caching, have got memcache, APC, pressflow and so on all set up but have a problem.

I have written a custom module that works similar (I would imagine) to how the flag module would (I imagine) work for logged out users, i.e. store flagging actions to the session then sync those to the user account on login or registration. Now imagine being able to see how many items you had flagged somewhere in the header, these counts are pulled from the session. For logged in users, the counts are pulled from the DB / memcache.

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High Performance

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  • 2015-11-16 08:00 - 2015-11-20 13:00 America/New_York
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