The obligatory disclaimer: The more performance you gain, the more data integrity you loose! But if you want to tune something like a file system, I strongly assume that you know what you are doing :) These tips apply to all major Linux distributions like Fedora/Red Hat, OpenSUSE, and Ubuntu that are already using ext4 or are going to make ext4 their default file system. As write operations on Solid State Disks (SSD) are expensive the tips below are focused on SSD usage but also apply to HDD usage as well . My Ubuntu 9.04 Jaunty /etc/fstab after a fresh installation: [...] UUID=d818ddf9-ff01-e21a-a67d-3ceab43a9e2b / ext4 relatime,errors=remount-ro 0 1 UUID=0d339122-74e0-e0ea-805a-7879b1fa3172 /home ext4 relatime 0 2 [...] My tuned Ubuntu 9.04 Jaunty /etc/fstab : [...] UUID=d818ddf9-ff01-e21a-a67d-3ceab43a9e2b / ext4 noatime,barrier=0,nobh,commit=100,nouser_xattr 0 1 UUID=0d339122-74e0-e0ea-805a-7879b1fa3172 /home ext4 noatime,barrier=0,data=writeback,nobh,commit=100,nouser_xattr 0 2
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