2012/02/03 22:28, Yongqiang Yang wrote:
On Fri, Feb 3, 2012 at 3:49 PM, Kazuya Mio<k-mio@xxxxxxxxxxxxx> wrote:
2012/02/03 7:36, Andreas Dilger wrote:
filesystem time(sec) call extX_mark_inode_dirty(times)
---
ext3 220.5 50,338,104
ext3 (patched) 196.3 25,169,658
ext4 (*1) 190.3 28,465,799
ext4 (*2) 201.5 27,963,473
ext4 (default) 223.3 14,026,118
*1 disable ext4-specific options (delalloc, extent, and so on)
*2 disable only delalloc option
This shows that ext4 with extents+delalloc is _slower_ than ext3, which
is very strange. In other similar tests of write performance (see
One more thing is that ext4+delalloc is slower than ext4+nodelalloc.
And according to the data, maybe ext4+extent is also slower than ext4+noextent.
What's the size of the fs? and what kind of the tested device?
I tested on Express5800/A1080a-S (4-way server with 8-core processors).
Filesystem size was 100GB. I used the 266GB LUN from the FC-SAN storage.
Regards,
Kazuya Mio
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
