(Small accident occurred on Andreas' reply, restoring fsdevel and quoting in entirety.) On Mon, Jun 26, 2006 at 03:13:57AM -0600, Andreas Dilger wrote: > On Jun 25, 2006 15:00 -0700, Valerie Henson wrote: > > Lots of small files: reiser, ext2/3 with 1k blocks > > More than ~32,000 files in one directory: XFS or reiser > > This is actually "more than 32000 subdirectories in one directory". Yeah, uh, dur. Thanks! > Unpatched ext3 is "good" up to 1M files and usable up to 10M regular > files in a single directory. Good to know the guidelines here. Thanks! -VAL > > Choosing journaling mode in ext3 > > - Default is "ordered", usually the right choice > > - "journal" is slower but guarantees data is on-disk as well > > Also good for NFS server or mail spool running in "sync" mode (sync > writes are linear into the journal). > > > - "writeback" is faster but may result in garbage/security leaks in > > your file data > > ... after a crash > > > Tuning reiser > > - I know nothing!!! Help! > > Tail packing saves space for small files, hurts performance somewhat. > > > Laptop mode > > - I know almost nothing about this... some kind of write timeout? > > Writes are cached until VM pressure forces them to disk (if disk is > suspended), or there is a read which causes disk to spin up. So, > chance of data loss if laptop crashes or "suspends" w/o writing it. > > > Cheers, Andreas > -- > Andreas Dilger > Principal Software Engineer > Cluster File Systems, Inc. - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
