wanna-be-a-Debian-system-administrator

Found this today and implemented it. We’ll see the results.

For the purpose of (my) safety I’m copying the main things below. Do visit the link below for full explanation.

1. Moto

“Screw data. Prioritize code.”

2. Tuning swappiness to prevent impromptu RAM hijacking

To tune swappiness, run as root:

sysctl -w vm.swappiness=1

To make the change permanent, write vm.swappiness=1 on your /etc/sysctl.conf file.

3. Filesystem caches are more important than other caches

How to tell Linux that we want it to prefer inode/dentry cache to other caches?

sysctl -w vm.vfs_cache_pressure=100

To make the change permanent, put vm.vfs_cache_pressure=50 on your /etc/sysctl.conf file.

Tales from responsivenessland: why Linux feels slow, and how to fix that

This entry was posted on Tuesday, October 9th, 2007 at 11:07 am and is filed under administration, speed. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.