Op 31 mrt. 2011 om 22:25 heeft Otto Moerbeek <o...@drijf.net> het volgende geschreven:
> On Thu, Mar 31, 2011 at 10:14:46PM +0200, Otto Moerbeek wrote: > >> So here's an initial, only lightly tested diff. >> >> Beware, this very well could eat your filesystems. >> >> To note any difference, you should use the -p mode of fsck_ffs (rc >> does that) and the fs should have been mounted with softdep. I now realize speedup will also be there for non -p usage in quite a few cases. So that explains the speed differences seen without -p. But the reported original 4 hours likely means the system is swapping. >> >> I have seen very nice speedups already. > > But don't count yourself a rich man too soon: for ffs2 filesystesm, > you won't see a lot of speedup, because inode blocks are allocated > on-demand there, so a filesystem with few inodes used likely has few > inode blocks. > > Also, depending on the usage patterns, you might have a fs where high > numbered inodes are used, while the fs itself is pretty empty. Filling > up a fs with lots of files and them removing a lot of them is an > example that could lead to such a situation. This diff does not speed > things up in such cases. > > -Otto
