On Jun 27, 2007 19:57 +0100, zuogui xie wrote:
> To keep compatibility, we begin to use meta block groups after the
> reserved block groups run out. superblock and single block group descriptor
> block are placed at the beginning of the first, second, and last block
> groups in a meta-block group.
sftf wrote:
> Hi!
> IMHO this test is not 100% correct.
> ext3 | data=writeback
> ext4 | data=writeback,extents,delalloc
> xfs | defaults is ordered !
>
> So you have compared ext's in writeback (which fastest mode) vs xfs in
> ordered.
Actually xfs's default (only) mode is more like w
Hi!
IMHO this test is not 100% correct.
ext3 | data=writeback
ext4 | data=writeback,extents,delalloc
xfs | defaults is ordered !
So you have compared ext's in writeback (which fastest mode) vs xfs in ordered.
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On Thu, 2007-06-28 at 10:39 +1000, David Chinner wrote:
>
>
> I don't think it does - swapfile I/O looks like it goes direct to
> bio without passing through the filesystem. When the swapfile is
> mapped, it scans and records the extent map of the entire swapfile
> in a separate structure and AF
On Thu, Jun 28, 2007 at 09:28:36AM +1000, Nathan Scott wrote:
> On Wed, 2007-06-27 at 23:36 +1000, David Chinner wrote:
> > Allows setup_swap_extents() to use preallocated files on XFS
> > filesystems for swap files without ever needing to convert them.
>
> Using unwritten extents (as opposed
On Wed, 2007-06-27 at 23:36 +1000, David Chinner wrote:
> Allows setup_swap_extents() to use preallocated files on XFS
> filesystems for swap files without ever needing to convert them.
Using unwritten extents (as opposed to the MKSWAP flag mentioned
earlier) has the unfortunate down side of
On Wed, 2007-06-27 at 18:15 +0200, Valerie Clement wrote:
> Hi,
> I re-ran some FFSB tests on ext3, ext4 and xfs filesystems, on a
> 2.6.22-rc5 kernel and with the latest ext4-git-tree (update of June 26).
>
> The results are available here:
> http://www.bullopensource.org/
Hi,
I re-ran some FFSB tests on ext3, ext4 and xfs filesystems, on a
2.6.22-rc5 kernel and with the latest ext4-git-tree (update of June 26).
The results are available here:
http://www.bullopensource.org/ext4/20070627/ffsb-write.html
Regards,
Valérie
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On Tue, Jun 26, 2007 at 11:49:15PM -0400, Andreas Dilger wrote:
> On Jun 27, 2007 09:14 +1000, David Chinner wrote:
> > Someone on the XFs list had an interesting request - preallocated
> > swap files. You can't use unwritten extents for this because
> > of sys_swapon()s use of bmap() (XFS returns
