| Date | Mon, 31 Mar 2008 15:47:05 +0300 | From | Adrian Hunter <> | Subject | Re: [RFC PATCH] UBIFS - new flash file system |
| |
Jan Engelhardt wrote: > > On Thursday 2008-03-27 15:55, Artem Bityutskiy wrote: >> >> here is a new flash file system developed by Nokia engineers with >> help of the University of Szeged. The new file-system is called >> UBIFS, which stands for UBI file system. UBI is the wear-leveling/ >> bad-block handling/volume management layer which is already in >> mainline (see drivers/mtd/ubi). >> [...] > > And how does it compare to logfs?
We don't know a lot about logfs, so you will really have to make your own comparison. However our general impressions are as follows:
1. In our testing logfs file operations seem to be much slower, see http://osl.sed.hu/wiki/ubifs/index.php/IOzone
2. logfs code base is much smaller i.e. UBIFS has 3-4 times as many lines of code.
3. logfs does not seem to have bad-block handling.
4. logfs does not seem to have wear-leveling.
5. We are not certain how scalable logfs is.
We could be wrong about those things - don't flame us if we are. Ask us about UBIFS, not logfs.
|