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Updating Site with huge DB to Drupal 6

Posted by gdtechindia on October 12, 2009 at 7:55pm

Hi Everyone.

I have asked this earlier on forums as well, but didn't get any response.

Upgrading a website with around 200k nodes from Drupal 5.20 to 6.14

I read the drupal upgrade guide and i have tried with a test database.

But, the upgrade process doesn't complete. There are always some errors.

Also, should be upgrade happen in just one go, or it can be performed in different sub-sections.

Last time i ran update.php file, it was with url >> /update.php?op=start&id=7 which tells that it was seventh time. I guess this shouldn't cause any trouble ?

Identifying D6 Performance Issue with Devel and xDebug

Posted by ISPTraderChris on October 13, 2009 at 12:52pm

I'm having some trouble diagnosing a performance issue on my D6 site. Devel returns the following information:

Executed 131 queries in 129.41 milliseconds. Queries taking longer than 5 ms and queries executed more than once, are highlighted. Page execution time was 2941.81 ms.

Clearly the issue is not with queries. Next I ran xDebug to profile the script execution for this page. Here is the summary output from xDebug:

File: c:\documents and settings\administrator\sites\acquia-drupal-site\acquia-drupal\idex.php
Self time: - (-) Cumulative Time: 374ms (100.0%)

Optimizing Drupal shared by high performance

Posted by grandjulien on October 17, 2009 at 8:45pm

Hello to all

Well, I read for some time. And now I pass on you ask for advice.

I am not an expert on the subject. My questions are simple.

How to work with Zend and Cacherouter ?
Could T'on Pressflow put on by changing the shared files install Drupal?

Thank you for your help

Sorry my english is bad

Drupal6 + CacheRouter + APC + SQUID

Posted by nublaii on October 22, 2009 at 1:38pm

We have a setup like this:

4 servers running apache+php+apc with drupal6 and cacherouter using the apc
4 squid caches, each one pointing to a single machine
1 Alteon doing the balancing

We set up the settings.php to use multiple servers with $cookie_domain and $base_url (with NO trailing slash)

We are currently having around 250.000 page views a day, but we're still struggling to keep the servers running smooth.

Initial Mercury Results From 512MB VPS deploy

Posted by joshk on October 23, 2009 at 3:52pm

Just a heads up; as we move towards more and more stable builds of the Mercury stack, we are starting to look at deploying it on other infrastructure besides EC2. This week, we set it up and tuned for a modest (512MB of ram) VPS. These tests were successful. We were able to simulate a mix of non-cached traffic along side the simple ApacheBench battering, and the system held up well, even without gigabytes of ram to support it.

EC2 Offering "MySQL Cloud"

Posted by joshk on October 27, 2009 at 4:53pm

Today Amazon announced a provided service for hosting MySQL databases in the cloud: Amazon Relational Database Service. It starts at $0.11/hr, plus $0.10 per GB/month of storage and $0.10 per million I/O requests. The real interesting question is how these will perform. The instances come in many flavors:

Small: 1.7 GB memory, 1 virtual core with 1 ECU. $0.11/hr
Large: 7.5 GB memory, 2 virtual cores with 2 ECUs each. $0.44/hr
Extra Large: 15 GB of memory, 4 virtual cores with 2 ECUs each. $0.88/hr
Double Extra Large: 34 GB of memory, 4 virtual cores with 3,25 ECUs each. $1.55/hr
Quadruple Extra Large: 68 GB of memory, 8 virtual cores with 3.25 ECUs each. $3.10/hr

That "Quadrupal XL" is pretty big! I'll be investigating this for Pantheon, but anyone else with experience/info, let's figure out how good these things really are!

Apache+PHP vs Java Server and Quercus

Posted by luckysmack on October 28, 2009 at 1:15pm

I recently managed to get my apache running smoothly for the most part. But i have a new conundrum. I am starting a side project which will be built on java using a java server such as tomcat or (i believe) resin. I have a friend who knows more about java as my knolege is rather limited who is suggesting this. The java server would be able to serve the php via an app called quercus found here: http://quercus.caucho.com

Additional testing of Mercury with 2GB and 512MB RAM

Posted by Greg Coit on October 29, 2009 at 10:03pm

My name is Greg Coit, sysadmin for Chapter 3 and I've been helping with Mercury development and testing.

We wanted a get a quick idea of how hard we could push mercury under more "real world" circumstances, so I combined siege and ab to generate a broad spectrum of hits. ab (short for apache benchmark and part of the apache2-utils package) allows you to generate a very large number of hits on one url, while siege (a perl script which comes in a self-titled debian/ubuntu package) lets you spread the hits across many urls, most of which won't be cached. This mixed-load is a much more nuanced and accurate way of looking at performance than peak throughput on a single url.

Project Mercury Beta!

Posted by joshk on October 30, 2009 at 11:59pm

With great pride, and after six alpha-level releases, I'm announcing of our seventh iteration on the Project Mercury stack, finally baked enough to call "beta".

At this point, we know that many people are using the Mercury EC2 image in production environments, and we've tuned this release conservatively to prevent it from breaking down under heavy load. We've also verified that the stack will work under a resource-constrained VPS (e.g. one with 1/4th the RAM of a small EC2 image), which gives us more confident that this configuration is stable. We also have a kickass logo:

Only local images are allowed.

Varnish config help

Posted by gmak on November 3, 2009 at 8:22pm

I'm working on speeding up our drupal(pressflow) website and would like to get varnish working, but seem to be finding some config difficulties. I'm hoping that someone here might have the expertise.

I have been following the instructions here, and get some predictable results but it is still causing some problems.

I am running a dedicated server (Debian Etch) with Plesk installed. This means that my normal Debian config files are slightly different. Here's what I've done:

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