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Multiple web servers and memcache

Posted by rotis23 on November 21, 2011 at 9:15pm

Hi All,

Fairly new to drupal and its caches. Been hunting around for the answers to my questions but not found anything exact.

I wanted to ask what the accepted best practice is for configuring memcache (MC) across multiple web servers.

By default the Drupal caches are shared in a single database. MC seems to offer a number of options:

1 - A single remote MC instance that emulates the default database configuration (either with single or multi-bin config).

Help figuring out what modules are actually in use.. to reduce memory footprint

Posted by gateway69 on November 22, 2011 at 6:34pm

Hi, I wanted to know if anyone out their knows of a few ways to track down whats using up the most memory on a site. We have been in development of a beer site for the last year or so part time and getting to the point where things from a site, function and look wise are kicking butt.

But im a bit worried about how much memory the site is using up and need a way to figure out what modules really are just enabled but not used.

How to improve performance ? I would like to know your thoughts ...

Posted by Aurélien on December 7, 2011 at 4:50pm

I would like to know your thoughts on Drupal and its performance, and especially how to improve it.

We currently use a system based on Drupal 6.22 Project Mercury (Pressflow, Varnish, APC ...) specially designed for heavy traffic. And we have installed more 50 modules like (Views, CCK, Panel, VBO, Rules, Workflow, UberCart, Solr…)

But our production server is a virtual environment with 4 CPUs and 8 GB of Ram, which is really huge for a single site. During our peak traffic, we have over 1,800 visits and more than 50 connected users for one day.

MySQL optimization with uc_order_products

Posted by neokrish on December 12, 2011 at 1:46pm

Hello,
I am working on site which has 13528 records in uc_order_products (from the ubercart 6 module).

Nid count is 5611.

To get the most purchased products, I have a query like below:

SELECT DISTINCT(node.nid) AS nid, uc_order_products.qty AS uc_order_products_qty FROM node  LEFT JOIN uc_order_products ON node.nid = uc_order_products.nid WHERE (node.type in ('product')) AND (node.status <> 0)  GROUP BY nid ORDER BY uc_order_products_qty DESC;

However this causes our linode server with 1024 MB ram to crash so quickly.

By crash, I mean,

High Performance Drupal meetup in Mar Vista on January 3, 2012

Posted by christefano on December 19, 2011 at 11:53pm

Start:

2012-01-03 17:00 America/Los_Angeles

Organizers:

christefano

stevethewebguy

oseldman

Event type:

User group meeting

The High Performance Drupal meetup now meets on the 1st Tuesday of the month.

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, scalability and DevOps on the Westside at the Venice Grind between 5-8pm on Tuesday, January 3, 2012. In the past, we've gone to dinner afterward at nearby restaurants including El Agave and Mitsuwa. 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 Tuesday, January 3, 2012

Where: Venice Grind at 12224 Venice Blvd, Los Angeles, CA 90066

varnish + multiple webheads = files/(css/.css|js/.js) missing

Posted by alexus on December 20, 2011 at 7:59pm

I have this weird issue and I'm not sure if it's me who's doing something wrong or I'm just missing something but maybe some of you can guide me a little bit here...

i setup a varnish server, within varnish itself i created 2 backends and using director i'm able to do round robin to my webheads. That parts seems to be working fine as I'm able to bring one of my webheads down and the other one can serve content to varnish and vice verse.

apc instances by php-fpm pool

Posted by Everett Zufelt on December 22, 2011 at 1:29pm

I'm in the process of moving a couple of sites to an Amazon ec2 microinstance. For the little traffic these sites get the microinstance will be suitable.

I am optimizing performance, and am using mod_fastcgi, php-fpm, and apc; along with varnish.

I have setup a separate fpm pool for each site, but they both appear to share the same apc instance, likely as apc is attached to the fpm process and not the pool.

Is there a method of using a separate apc instance per fpm pool? Or, can someone suggest a setup that is as performant, but which would allow for separate apc instances per site?

Drupal on IIS 7.x Free Training at DrupalCon 2012

Posted by alexpilotti on December 22, 2011 at 6:02pm

Start:

2012-03-19 (All day) America/Denver

Event type:

Training (free or commercial)

Hi Guys,

There will be a FREE full day training on Drupal on Windows at DrupalCon 2012 in Denver.

Topics will start from the basic deployment via WebPI on IIS 7.x and go up to the configuration of a full load balanced web farm using Application Request Routing!
There will be a lot of stuff indeed.

Attendance fees are sponsored by Microsoft and places are limited, so please register early! :-)

Here's the URL of the event at DrupalCon 2012

And here are some details:

GlusterFS and Drupal 7 horizontal scaling

Posted by newbie7001 on December 23, 2011 at 12:45am

Prehaps someone can help me or at least point me in the right direction. If one needed to scale up a couple apache servers but share the docroot using a synchonized (common source) it seems glusterfs is a good solution. I have set up an experimental Glusterfs replicated system (2 instances, each both master and client) with linux (ubuntu), apache and php on them. Got Glusterfs working fine, however I am a little unclear how to "link" /var/www to the glusterfs client mount point (e.g. /mnt/point). Not sure how to bring drupal and Glusterfs together using "best practices."

Which Linux flavour to choose?

Posted by playfulwolf on December 29, 2011 at 2:24pm

Hi,

Found VPS provider for aegir instalation (up to 15 D6-D7 sites, 1/2 of them corporate brochure type), it will be openVZ with guaranteed 2048Mb RAM, mysql+php+apc+apache+smtp, and other basic services, maybe Apache Solr. Memcahed/Nginx/Varnish is a possibility if performance benefits over simple Boost module+APC are worth pain having another service on same vps.

Which linux to choose from this list:

CentOS 4
CentOS 5
CentOS 6
Debian 4
Debian 5
Debian 6
Fedora 14
Fedora 15
openSUSE 11.3
openSUSE 11.4
Ubuntu 10.04

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