Re: optimal disk performance, ubuntu

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Quoting Atte André Jensen <atte.jensen@xxxxxxxxx>:

> atte@vestbjerg:~$ 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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