On Feb 08, 2002 12:42 -0500, Bill McGonigle wrote: > I'm trying to eek every last bit of performance out of a sync NFS server > using ext3. > > I created a 400MB journal, for my data=journal disk. When copying a > 200MB file to the machine, by the sound of the disk, it flushed data to > disk about 4 times, so, about every 50MB. I think there is also a 5 second flush interval. IIRC, there is a parameter which can be tuned, but I don't know the exact mechanism (compile time, mount option, /proc entry). Hmm, looking further, it seems it is a compile-time option in fs/jbd/journal.c:journal_init_common.c where it sets the journal_commit_interval. I thought Andrew at least had a patch to make the journal_commit_interval match the flush interval for bdflush. Cheers, Andreas -- Andreas Dilger http://sourceforge.net/projects/ext2resize/ http://www-mddsp.enel.ucalgary.ca/People/adilger/
