Hello,
On V, MÁJ 06, 2001 at 06:24:12 +0800, Federico Sevilla III wrote:
> This is potential flame bait, so I hope the worst doesn't happen.
Yes, so take my answer as my experience, no more. I do not want to say
which one is the best.
> Does anyone have information on performance? Space utilization?
I _think_ performance is about the same for XFS and ReiserFS. I forgot
to make a compare test, when I moved to XFS from ReiserFS. Oh, and a
little remark: as I know ext3 patches are for 2.2.x kernels only. It
seems no one is intrested to port it to 2.4.x kernels. Thus I think ext3
lost the game here. :-/ About space utilization: as I know ReiserFS can
put several small files into one cluster, thus preserve more space for
other files. On the other hand, XFS is lazy to allocate inodes, and only
get more (against free clusters to store the file itself) if it is
necessary. The only drawback as I know, that XFS never gives back these
inode clusters. This means, if you create millions of very small files,
and after you delete them, you see your disk storage size shrink.
> Reliability when recovering from unclean shutdowns?
The only winner is XFS here. I never had any problems with it. The only
thing happened is my enlightenment configuration file got trashed when
it was middle of the writing I guess. But it is not a bug. As for
ReiserFS, it had some problems for me. I noticed several fs corruption,
and I had to run the recover utility. It is fixed the problems, but it
took some time (I have a 16Gb slice). Also, I always deleted the
corrupted directories after. Maybe I got back them cleanly, maybe not,
never checked. Just deleted, and recreated the things.
Also, in the early kernels, ReiserFS was known for file handling bugs,
which corrupted the files afaik.
> With ReiserFS AFAIK mail queues currently run on a risk because perfectly
> timed power downs could cause mail to "disappear". How would situations
> like this be handled by XFS?
Sure, ReiserFS has (had?) problems with it, but you could download a
patch against this problem. XFS does not have this problem, but I do not
know about it for sure.
Just my thoughts,
Laszlo Boszormenyi
|