Re: Perc 5/i SAS

[moda <moda%sdnet.info@localhost>]

Le 15.8.2012 20:37, Thor Lancelot Simon a écrit :
> On Wed, Aug 15, 2012 at 08:29:33PM +0200, moda wrote:
> > Hello,
> >
> > I made a simple test with a 1950 server and Perc 5/i SAS Raid 
> > Controler
>
> Something is wrong with your test results - are you sure you didn't 
> paste
> either the NetBSD or OpenBSD iostat output twice?  They should not be
> identical.
>
> Thor

Better performance :

RAID1 + Force WB with no battery option enable in RAID BIOS Controler :

# time dd if=/dev/zero of=/tmp/16g bs=65536 count=262144

30715+0 records in
30714+0 records out
2012872704 bytes transferred in 15.665 secs (128494906 bytes/sec)

iostat -w 1
      tty              cd0               sd0               md0          
  CPU
 tin tout  KB/t  t/s  MB/s   KB/t  t/s  MB/s   KB/t  t/s  MB/s  us ni 
sy in id
   3   45  0.00    0  0.00  58.60   91  5.21   0.00    0  0.00   0  0  
1  0 98
   0  239  0.00    0  0.00  63.89 2078 129.63   0.00    0  0.00   0  0 
12  2 86
   0   80  0.00    0  0.00  63.95 2028 126.64   0.00    0  0.00   0  0 
11  1 88
   0   80  0.00    0  0.00  63.95 2060 128.68   0.00    0  0.00   0  0 
11  1 88

Thanks to Imil for the tip.

Regards