Performance on Dotdeb

Percona toolkit 2.2.5

Tue, 05 Nov 2013 04:55:21 +0000

Percona toolkit 2.2.5 is now available on Dotdeb for both Debian 7.0 “Wheezy” and Debian 6.0 “Squeeze”. It fixes 5 bugs as well as 4 new features.

As usual, before upgrading, please read the list of changes for Percona toolkit 2.2.5 and the announcement by Hrvoje Matijakovic.

Nginx 1.4.0, for Wheezy and Squeeze

Sun, 28 Apr 2013 20:47:30 +0000

Nginx 1.4.0 stable version has been released on April 24th 2013, incorporating many new features developed in the 1.3.x branch :

support for proxying of WebSocket connections,
OCSP stapling,
SPDY module,
gunzip filter,
and more… See the full Changelog for more details.

As a consequence, Dotdeb’s packages of Nginx 1.4.0 are now available for both Debian 7.0 “Wheezy” and Debian 6.0 “Squeeze” (amd64/i386) with the following changes :

(Wheezy only) SPDY support has been enabled in nginx-extras and nginx-full.
(Wheezy only) the nginx-passenger flavor has been removed. You should use unicorn or uwsgi-plugin-rack-ruby* instead.
nginx-extras now supports HTTP Gunzip.
Naxsi has been upgraded to 0.50.
chunkin-nginx-module (useless now) and nginx-upload-module (incompatible with 3.1.8+) are no longer supported.
The headers-more, echo, lua, Push stream, Pinba and Passenger modules got minor upgrades.

As usual, if you want to know which module has been included in each Nginx flavor, you just have to look at this document.

Percona toolkit 2.1.9

Tue, 19 Feb 2013 19:30:32 +0000

Percona toolkit 2.1.9 is now available on Dotdeb for Debian 6.0 “Squeeze”. It includes many bug fixes and it is worth upgrading to, especially if you were affected by the backwards-incompatible changes to pt-heartbeat in 2.1.8. Take a look at this blog post by Daniel Nichter for more info.

As usual, please read the list of changes for Percona toolkit 2.1.9 before upgrading.

Pinba engine 1.0.0

Fri, 17 Aug 2012 11:05:49 +0000

I already talked about Pinba, this great Application Performance Monitoring (APM) tool that is made of :

a MySQL storage engine ( pinba-mysql-5.5),
a PHP extension ( php5-pinba),
and even a python module, pynba, (thanks to my IsCool Entertainment friends) and an experimental Nginx module.

But since MySQL 5.1 support has been discontinued on Dotdeb, it was impossible to install the Pinba MySQL storage engine, just because it depended on a non-existant MySQL 5.1 version.

Using the Google Perftools to speed up your MySQL server

Mon, 25 Aug 2008 15:13:44 +0000

The Google Perftools, especially tcmalloc (Thread Caching Malloc), can be very useful to speed up your applications, depending on your environment :

TCMalloc is faster than the glibc 2.3 malloc (available as a separate library called ptmalloc2) and other mallocs that I have tested. ptmalloc2 takes approximately 300 nanoseconds to execute a malloc/free pair on a 2.8 GHz P4 (for small objects). The TCMalloc implementation takes approximately 50 nanoseconds for the same operation pair.