[SLL] limit on number of files in a directory and hashed dir vs. flat dir file access time

Chuck Wolber chuckw at quantumlinux.com
Wed Oct 31 21:20:45 PDT 2007


On Wed, 31 Oct 2007, Ana wrote:

> Here's an interesting thread on the topic.
> 
> http://linux.derkeiler.com/Mailing-Lists/Fedora/2005-07/3279.html

I disagree with the premise of his test. You cannot use "ls" and "rm" in a 
test like that because they index the entire contents of a directory 
before they actually do anything useful. This subverts the tree nature of 
ext3 directory parsing. 

A better test is to simply create "n" files and then calculate the average 
and standard deviation of the time to open and then close those files. 


More information about the linux-list mailing list