[nylug-talk] ext3 and noatime

[Miguel Gonzalez Castaños]

Hi,

  I'm researching on how to tune ext3 filesystems in Virtual machines
using iSCSI. I have checked the performance of the raw disk is good
(around 90-100 MB/s) but the performance of the underlying filesystem is
low (around 16 MB/s).

  This guy claims that mounting the filesystem with noatime improves the
performance:

  http://ubuntuforums.org/showthread.php?t=107856

  I've checked it together with nodiratime and writes boosted to 85 MB/s
which is pretty similar to the raw disk performance.

  The guy in blog says that could lead to some problems using make but
he hasn't experienced anything similar, does anyone know if this noatime
settings could cause any data corruption or any problem? We are going to
use it probably for Subversion repositories and maybe Apache websites.

  Miguel