Re: [LAU] optimal disk performance, ubuntu

Quoting Atte André Jensen <atte.jensen@email-addr-hidden>:

> atte@email-addr-hidden:~$ sudo hdparm -Tt /dev/sda
>
> /dev/sda:
> Timing cached reads: 1862 MB in 2.00 seconds = 931.56 MB/sec
> Timing buffered disk reads: 142 MB in 3.00 seconds = 47.29 MB/sec
>
> How does that sound?

Those numbers seem about right. The three disks in my PC at work show:

sda: Samsung SpinPoint SP0411C 40GB SATA/150 7200RPM 2MB HDD
/dev/sda:
  Timing cached reads: 2920 MB in 2.00 seconds = 1460.18 MB/sec
  Timing buffered disk reads: 150 MB in 3.02 seconds = 49.72 MB/sec

sdb: Seagate Barracuda ST380011A IDE 80 GB
/dev/sdb:
  Timing cached reads: 2836 MB in 2.00 seconds = 1417.47 MB/sec
  Timing buffered disk reads: 80 MB in 3.02 seconds = 26.45 MB/sec

sdc: MAXTOR 4G120J6 IDE 120.0GB
/dev/sdc:
  Timing cached reads: 2920 MB in 2.00 seconds = 1460.83 MB/sec
  Timing buffered disk reads: 80 MB in 3.07 seconds = 26.09 MB/sec

I think the IDE drives should be faster but I haven't got an ATA-100
cable so that might be the culprit.

- Peder
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Received on Thu Nov 20 16:15:01 2008