SRIOV Enhanced Networking in AWS EC2 on Ubuntu-14.04 HVM
The latest EC2 generation of HVM instances makes use of the Enhanced Networking, utilizing the ixgbevf e1000 Gigabit Virtual Function Network Driver which provides significantly faster network layer processing. We can see it is already in use on Ubuntu-14.04 with…
Server side PHP caching in Joomla! with Repcached
Caching provides significant performance speed up since reading data from the memory is much faster then reading it from the database or disk, especially if it resides on a different server. In our case they are on the same one…
Managing system resources with Cgroups and Ansible
Sometimes we need to limit particular resource usage for some process, utility or group of processes in order to prioritize or limit their usage. One way to achieve this in the modern Linux kernel is via Cgroups. They provide kernel…