On Fri, Dec 16, 2011 at 12:25:08PM +0800, Dave Chinner wrote: > On Fri, Dec 16, 2011 at 09:53:11AM +0800, Wu Fengguang wrote: > > I'm indeed happy that you don't care that much on that regression > > introduced by me ;-) > > Heh. > > BTW, do these tests run to ENOSPC? Nope. Shall ENOSPC (performance) be tested? > > 10829.00 +4.3% 11296.00 TOTAL xfs:xfs_delalloc_enospc > > This implies that it does. Not really. The USB key partition size is 7.1GB. Even in the fastest 1dd case, only 4GB data is written: wfg@bee /export/writeback% cat fat/UKEY-thresh=100M/xfs-1dd-1-3.2.0-rc3/ls-files 131 -rw-rw-r-- 1 root root 4060078080 Dec 8 15:57 /fs/sdb3/zero-1 That's about 6.7MB/s write bandwidth running for 600 seconds. Thanks, Fengguang -- 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