On Tue, 2008-01-08 at 16:21 +0100, Mike Galbraith wrote: > On Tue, 2008-01-08 at 03:38 -0800, Andrew Morton wrote: > > > > Well. From your earlier trace it appeared that something was causing > > the filesystem to perform synchronous inode writes - sync_dirty_buffer() was > > called. > > > > This will cause many more seeks than would occur if we were doing full > > delayed writing, with obvious throughput implications. > > Yes, with UDF, the IO was _incredibly_ slow. With ext2, it was better, > though still very bad. I tested with that other OS, and it gets ~same > throughput with UDF as I got with ext2 (ick). > > UDF does udf_clear_inode() -> write_inode_now(inode, 1) > > I suppose I could try write_inode_now(inode, 0). Might unstick the box.
(nope, still sync, UDF still deadly) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
