On Nov 20, 2007 12:22 -0800, Mingming Cao wrote:
> On Tue, 2007-11-20 at 12:14 +0800, Coly Li wrote:
> > Mingming Cao wrote:
> > > On Tue, 2007-11-13 at 22:12 +0800, Coly Li wrote:
> > The hole is (s_dir_ireserve_nr - 1), not N * s_dir_ireserve_nr. Because
> > directory inode will also use a inode
On Tue, 2007-11-20 at 12:14 +0800, Coly Li wrote:
> Thanks for the feedback :-)
>
> Mingming Cao wrote:
> > On Tue, 2007-11-13 at 22:12 +0800, Coly Li wrote:
> >> Basic idea of my dir inode reservation patch can be found here,
> >> http://lists.openwall.net/linux-ext4/2007/11/05/3
> >>
> >> 1, Wha
On Wed 21-11-07 00:40:17, Coly Li wrote:
> Jan Kara wrote:
> >> diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
> >> index 17b5df1..f838a72 100644
> >> --- a/fs/ext4/ialloc.c
> >> +++ b/fs/ext4/ialloc.c
> >> @@ -10,6 +10,8 @@
> >> * Stephen Tweedie ([EMAIL PROTECTED]), 1993
> >> * Big-endian
Jan,
Thanks for taking time to review the patch :-)
Jan Kara wrote:
> Hi Coly,
>
> finally I've found some time to have a look at a new version of your
> patch.
>
>> 5, Performance number
>> On a Core-Duo, 2MB DDM memory, 7200 RPM SATA PC, I built a 50GB ext4
>> partition, and tried to crea
Hi Coly,
finally I've found some time to have a look at a new version of your
patch.
> 5, Performance number
> On a Core-Duo, 2MB DDM memory, 7200 RPM SATA PC, I built a 50GB ext4
> partition, and tried to create 5 directories, and create 15 (1KB)
> files in each directory alternatively.
Thanks for the feedback :-)
Mingming Cao wrote:
> On Tue, 2007-11-13 at 22:12 +0800, Coly Li wrote:
>> Basic idea of my dir inode reservation patch can be found here,
>> http://lists.openwall.net/linux-ext4/2007/11/05/3
>>
>> 1, What does dir inode reservation do
>> Dir inode reservation tries to
On Tue, 2007-11-13 at 22:12 +0800, Coly Li wrote:
> Basic idea of my dir inode reservation patch can be found here,
> http://lists.openwall.net/linux-ext4/2007/11/05/3
>
> 1, What does dir inode reservation do
> Dir inode reservation tries to reserve several inodes in inodes table for a
> directo
Coly Li wrote:
> Thanks for the feedback :-)
>
> Alex Tomas wrote:
>> hmm. so you trade 265% degradation of creation for 40% improvement of
>> unlink?
>>
> 265% degradation is only for creating 5 empty directories. This is not a
> common case.
> There are 13% improvement on create 15 files
Thanks for the feedback :-)
Alex Tomas wrote:
> hmm. so you trade 265% degradation of creation for 40% improvement of
> unlink?
>
265% degradation is only for creating 5 empty directories. This is not a
common case.
There are 13% improvement on create 15 files in each directories. Total time
hmm. so you trade 265% degradation of creation for 40% improvement of unlink?
thanks, Alex
Coly Li wrote:
normal ext4 ext4 with dir inode
reservation
mount options: -o data=writeback -o
data=writeback,dir_ireserve=low
Basic idea of my dir inode reservation patch can be found here,
http://lists.openwall.net/linux-ext4/2007/11/05/3
1, What does dir inode reservation do
Dir inode reservation tries to reserve several inodes in inodes table for a
directory when this
directory is created. When create new file under
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