Aaron Clark wrote:
Dirk Heinrichs wrote:
Am Freitag, 15. Februar 2008 schrieb ext Strong Cypher:
For exemple , with reiser4 the portage directory don't take a lot of
space, and so read it it's really fast...
The same is true for reiser3.
I want a alternative
Well, there are plenty: xfs, jfs, ...
Of the current main four FS's on modern linux, here's a general
overview of them:
ext3: Older, reliable, stable. You get very good tools support for
ext3 (including online resize) and low cpu-usage for the most part
but it's slower and less space efficient than more recent fs's.
jfs: Better performance than ext3, deals with larger files reasonably
well with low cpu usage. Not very commonly used to my knowledge.
reiserfs (reiser3): very fast for most operations (the exception being
directory creation iirc), especially efficient for dealing with many
small files. It has noticeably higher cpu-usage than ext3/jfs. I
believe there are also some potential performance bottlenecks on SMP
systems as it makes liberal use of the Big Kernel Lock.
xfs: high performance, especially when dealing with many large or
small files; Gets along very well with raid arrays. Noticeably higher
cpu usage than ext3/jfs. IIRC, it aggressively caches its writes so
there is a slight possibility of data loss if your power goes out
suddenly in the middle of a series of writes (I consider this a very
small possibility, it is journalled like the other fs's on this list
so the filesystem will still come up in a consistent state, you just
may be missing some of the data you were writing). Very good online
tools support provided with it.
I'm sure someone will jump in to correct me if I've misremembered
something. Favorite filesystems can be a bit like Window Manager or
favorite Desktop debates.
Aaron
Little addition to XFS, I tried it once a while ago. Every time the
power failed, it would never boot again. I can say from personal
experience and from what I have read from others, if you plan to use
XFS, have a good UPS hooked up. It does not like power failures at
all. YMMV
Dale
:-) :-)
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