(Illustration by Gaich Muramatsu)
On Tue, Aug 03, 2004 at 08:34:57PM -0500, Troy Benjegerdes wrote: > On Fri, Jul 30, 2004 at 12:52:00PM -0400, Jan Harkes wrote: > > On Sun, Jul 25, 2004 at 02:14:54PM -0400, shivers_at_cc.gatech.edu wrote: > > > From: Ivan Popov <pin_at_medic.chalmers.se> > > > > > > (yet I do not seem to find how big your client caches were) > > > > > > Pretty big, varying from 100Mb to 10Gb. > > > > I use a 200MB cache which works pretty well. It translates to about 8000 > > locally cached objects. > > > > But without tweaks, a 10GB Coda client will try to cache up to 420000 > > files. This in itself shouldn't be a problem except for the fact that > > there are a couple of places where every object is compared to every > > other object. So with 8K objects there are about 64 million > > comparisons, while with 420K objects there are more than 176 billion. > > I think it would do everyone a lot of good to separate the cache size > limit from the number of files limit. I'd like to have 8000 files, but > 20GB of cache. (for MP3 files, for instance). How do I do this? It is separate(able). If the number of cachefiles is not specified in /etc/coda/venus.conf, we calculate it based on the configured number of blocks / 24. But you can also set an explicit value by changing 'cachefiles=0' to some non-zero value. This is similar to how mkfs and friends work, if you simply give a partition it will allocate a predefined number of inodes and superblocks based on the size of the partition. But it is possible to override those values for special cases. > Coda has kernel modules for a bunch of different OS'es, and the only > complaint about the module I've heard from linux developers is that it > seems unmaintained, but that's only because it doesn't need to change > very much. Partly because it doesn't need to change all that often, but probably more importantly partly because it is a real pain to support different interfaces on various platforms as well as a problem to push any major change through to all kernels. Even now linux-2.4 doesn't support realms with the default kernel module, while some fixes for the old pre-realms interface in were dropped for 2.6. (note to self: should resend kernel patches at some point...) JanReceived on 2004-08-06 14:36:36