best filesystem for imap server

[Einar Indridason]

On Sun, Dec 05, 2004 at 12:43:14AM -0200, Henrique de Moraes Holschuh wrote:
> On Sat, 04 Dec 2004, Einar Indridason wrote:
> > 
> > Don't forget JFS from IBM.
> 
> All I know about JFS is that it did not come up as better enough than ext3
> in a few benchmarks I've seen, to bother with it at the time :(
> 
> If you have first hand experience with JFS, please describe it to us.
> Especially data protection capabilities and performance in ridiculously big
> directories, as required by Cyrus spools :)

I don't have a first hand experience with JFS.  I just found it to be
missing from the discussion.

We do have some *huge* mail-folders here, running on ext3, and when a
directory gets over a certain size, every operation on the directory
increases in time very sharply.  (Due to the "linked list" implementation
in ext2/ext3.)

We did some googling around regarding which filesystem to choose, and I'm
inclined to try JFS when we install the next mail-server.

Some URLs I stumbled upon:

http://linuxgazette.net/102/piszcz.html
http://jamesthornton.com/hotlist/linux-filesystems/

And of course:
http://www.google.com/search?q=journaled+filesystem+benchmark+linux


--
einari
---
Cyrus Home Page: http://asg.web.cmu.edu/cyrus
Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html