[BlueOnyx:07273] Re: Sata300 Disk Transfer Speeds

[Steffan]

Using hardware raid:

[root at node1 ~]# /sbin/hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   11232 MB in  1.99 seconds = 5639.05 MB/sec
 Timing buffered disk reads:  650 MB in  3.05 seconds = 213.07 MB/sec

[root at node2 ~]# /sbin/hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   16956 MB in  1.99 seconds = 8519.37 MB/sec
 Timing buffered disk reads:  998 MB in  3.00 seconds = 332.29 MB/sec


-----Oorspronkelijk bericht-----
Van: blueonyx-bounces at mail.blueonyx.it
[mailto:blueonyx-bounces at mail.blueonyx.it] Namens KA0JON
Verzonden: donderdag 12 mei 2011 4:37
Aan: Blueonyx at blueonyx.it
Onderwerp: [BlueOnyx:07264] Sata300 Disk Transfer Speeds

Hi Blues, 

 

Got a question. I trying to figure out weather I have the right selection
set for my motherboard

 

In the Bios you can choose Native IDE Mode, Raid, or AHCI mode. I choose
AHCI mode

 

And installed Aventurine with 3ea 500gig with 16 meg buffers hard drives and
choose software mirror on Aventurine install.

 

According to this article I googled
http://www.cyberciti.biz/tips/how-fast-is-linux-sata-hard-disk.html

 

Linux kernel will recognize it and it does.  I ran some tests and would be
curious if someone else

 

Could also run these tests on you BO box if your using Sata 300 drives.

 

At the command prompt "#" These are the commands I run and the results I get

 

# sudo hdparm -I /dev/sda | grep -i speed

           *    SATA-I signaling speed (1.5Gb/s)

           *    SATA-II signaling speed (3.0Gb/s)

 

# sudo hdparm -I /dev/sdb | grep -i speed

           *    SATA-I signaling speed (1.5Gb/s)

           *    SATA-II signaling speed (3.0Gb/s)

 

# sudo hdparm -I /dev/sdc | grep -i speed

           *    SATA-I signaling speed (1.5Gb/s)

           *    SATA-II signaling speed (3.0Gb/s)

 

# sudo hdparm -tT /dev/sda

 

/dev/sda:

 Timing cached reads:   5556 MB in  2.00 seconds = 2781.70 MB/sec

 Timing buffered disk reads:  340 MB in  3.01 seconds = 112.95 MB/sec

 

sudo hdparm -tT /dev/sdb

 

/dev/sdb:

 Timing cached reads:   5524 MB in  2.00 seconds = 2764.87 MB/sec

 Timing buffered disk reads:  358 MB in  3.06 seconds = 116.89 MB/sec

 

sudo hdparm -tT /dev/sdc

 

/dev/sdc:

 Timing cached reads:   5440 MB in  2.00 seconds = 2721.31 MB/sec

 Timing buffered disk reads:  324 MB in  3.02 seconds = 107.38 MB/sec

 

I really am looking for comparison as I don't quite understand all the
results.

 

Any feed back would be appreciated

 

David Kreifels

 

 


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