Neil Conway wrote: > Bruce Momjian <[EMAIL PROTECTED]> writes: > > The paper does recommend ext3, but the differences between file systems > > are very small. > > Well, I only did a very rough benchmark (a few runs of pgbench), but > the results I found were drastically different: ext2 was significantly > faster (~50%) than ext3-writeback, which was in turn significantly > faster (~25%) than ext3-ordered.
Wow. That leaves no good Linux file system alternatives. PostgreSQL just wants an ordinary file system that has reliable recovery from a crash. > > Also, though ext3 is slower, turning fsync off should make ext3 function > > similar to ext2. > > Why would that be? I assumed it was the double fsync for the normal and journal that made the journalling file systems slog. -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
