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
