How fast is your disk?

[img_assist|nid=833|title=|desc=|link=none|align=left|width=242|height=178]With a little bit of torturing, and some fun on the way, find out how fast your hard disk drive really is.


Finally user-friendly virtualization for Linux

The upcoming 2.6.20 Linux kernel is bringing a nice virtualization framework for all virtualization fans out there. It's called KVM, short for Kernel-based Virtual Machine. Not only is it user-friendly, but also of high performance and very stable, even though it's not yet officialy released. This article tries to explain how it all works, in theory and practice, together with some simple benchmarks.

A little bit of theory

First benchmarks of the ext4 file system

Seeing that the development of the ext3 file system successor has started, and that Andrew Morton has released mm patch containing ext4 file system, I decided to run some simple benchmarks, even in this early stage of development.

How to optimize PostgreSQL database size

[img_assist|nid=199|title=|desc=|link=none|align=left|width=90|height=105]PostgreSQL is a powerful, open source relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness.

The adaptive readahead patch benchmark

One of the more interesting patches for the linux kernel lately has been Wu Fengguang's adaptive readahead patchset, currently at version 12. Talking about its performance benefits Wu says: "besides file servers and desktops, it is recently found to benefit postgresql databases a lot.".

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