[Ocfs2-users] ocfs2 vs ext3?

[Andrew (Anything)]

Hi Tao.

> > on a single node system (with no network latency, and only itself to
> talk
> > to) I had expected better results.
> > is a 10x reduction in file creation/modification an expected result?
> could you please talk a little more about the test case?
> 

Ive been testing using bonnie++ -n 50:1024:0:10 -s 0. Is this a bad way to
test?
Some raw results follow later in case you want them.

Obviously ocfs2 should be slower than ext3.
But I guess I expected a single node ocfs node to be only doing internal
stuff with kernel and dlm at really fast cpu speeds, and its only bottleneck
to be writing to the disk. For it to be so slow it must be doing heaps of
disk stuff instead?

Had tried a few dd tests however oflag=direct seems to cause an instant
kernel panic, I don't know if I am to trust dd's results without directio.

Andy..


ext3, noatime,
bonnie++ -d /mnt/temp/ -n 50:1024:0:10 -s 0
Version 1.03e       ------Sequential Create------ --------Random
Create--------
wombat              -Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
files:max            /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec
%CP
       50:1024:0/10 10838  43 +++++ +++ 20386  50  7147  28 +++++ +++ 17248
44


ocfs2, -T mail max-features, noatime,data=writeback,
bonnie++ -d /mnt/temp/ -n 50:1024:0:10 -s 0
Version 1.03e       ------Sequential Create------ --------Random
Create--------
wombat              -Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
files:max            /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec
%CP
       50:1024:0/10  1429  53 10849  32  1224   8  1354  51   205   2   292
4

I ran both a few times just in case.