R: R: Some help needed to install Lenny on the Intel SS4000-E nas

[Andrea Lanza <andrea.lanza@frameweb.it>]

> 
> > No, it is on a 1.8 TB stripe set
> 
> Stripe ? It's RAID0 ?

YES, it is

> > no, I Don't; it is:
> > /storage           *(rw,no_subtree_check,sync,no_root_squash)
> 
> Could you please try at the occasion ?
> 
> Just to see if it makes a difference...
> 
> Normaly, async boost the nfs perfs !


seems to be exactly the same....

I see somehing really strange (according to me...)

I did the following test, having a file of (file.tar.gz.1) 457559901 bytes;
I copied it twice (file.tar.gz.2 file.tar.gz.3).
Then I try to copy these 3 files (total of 1372679703 bytes) via nfs to the NAS

date && cp file.tar.gz.* /mnt/storage/ && date
Fri Jul 31 09:46:41 CEST 2009
Fri Jul 31 09:49:36 CEST 2009
So I am getting the 3 files copied in 2 min and 55 sec, 7,48 MBytes/s: sounds good !

But if I tar the 3 files, and then I copy the resulting file:

date && cp speedtest.tar /mnt/storage/ && date
Fri Jul 31 13:37:35 CEST 2009
Fri Jul 31 13:43:52 CEST 2009
so it takes 6 min and 18 secs, 3.5 MBytes/sec rate: less good...


If I copy a greater file : (13576740864 about 13.2 GB)
start: 2009-07-31 07:53:47
end:	 2009-07-31 09:11:58
so it takes 2 hours, 18 min and 11 secs, 1.56 MBytes/sec rate: very bad.

So it seems the greater is the file, the lower is the rate !


Andrea