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Linux Optimizing Filesystems

jason — Thu, 20 Aug 2009 07:52:34 +0000

If you’ve already installed Linux, your partitions are already set up and configured with particular filesystems. You may decide you want to modify this configuration, though. Some changes are tedious to implement. For instance, changing from one filesystem to another requires you to back up, create a new filesystem, and restore your files. One exception to this rule is changing from ext2fs to ext3fs. If you switch filesystems, you may be able to use filesystem-creation options to improve the performance of the new filesystem. Other changes can also be done relatively painlessly. These include defragmenting a… Read the rest

Mysql Optimizing, Analyzing, Checking, and Repairing Tables

jason — Tue, 04 Aug 2009 07:00:46 +0000

A regular part of a database administrator’s job is to do preventative maintenance, as well as to repair things when they go wrong. In spite of the best efforts, data errors can occur, such as in the case of a power failure that interrupts a write. Usually you can correct these fairly painlessly.

There are four main tasks involved in checking and repairing:

Optimizing tables
Analyzing tables (analyzes and stores the key distribution for MyISAM and BDB tables)
Checking tables (checks the tables for errors, and, for MyISAM tables, updates the key statistics)

… Read the rest

Optimizing Apache and PHP

jason — Mon, 06 Jul 2009 10:49:28 +0000

Linux, Apache, MySQL, and PHP (or Perl) form the basis of the LAMP architecture for Web applications. Many open source packages based on LAMP components are available to solve a variety of problems. As the load on an application increases, the bottlenecks in the underlying infrastructure become more apparent in the form of slow response to user requests. The previous article showed you how to tune the Linux system and covered the basics of LAMP and performance measurement. This article focuses on the Web server components, Apache and PHP.

Tuning Apache

Apache is a highly configurable piece of software. It… Read the rest