Google Perf tools - Debian, TCMalloc, Magento and Percona MySQL

Written by Peter Davies on 28 February 2013.

For several years now we've been running complex Magento-based stores and on the client's that are very busy we've noticed some issues with MySQL locking when it shouldn't really need to.

After some searching around I came across the GitHub blog post that describes exactly what we found on our system. Here are the details in order to make this function on your Debian 6 installation (and in this case with Percona MySQL):

apt-get install libtcmalloc-minimal0
nano /etc/init.d/mysql

add just after export HOME

export LD_PRELOAD="/usr/lib/libtcmalloc_minimal.so.0"
/etc/init.d/mysql restart