On a pretty loaded system with a 3ware 74xx series card, we're getting:

# hdparm -tT /dev/sda3

/dev/sda3:
 Timing buffer-cache reads:   128 MB in  0.65 seconds =196.92 MB/sec
 Timing buffered disk reads:  64 MB in  1.44 seconds = 44.44 MB/sec

This seems to be more in-line with expectations.

Sincerely,
Jason
http://www.zentek-international.com/

----- Original Message -----
From: "Bulent Murtezaoglu" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, December 01, 2002 11:07 AM
Subject: Re: SCSI or IDE


> >>>>> "TH" == Thomas Kirk <[EMAIL PROTECTED]> writes:
> [...]
>     TH> /dev/sdb5: Timing buffer-cache reads: 128 MB in 0.95 seconds
>     TH> =134.74 MB/sec
>
>     TH> /dev/sdb5: Timing buffered disk reads: 64 MB in 3.42 seconds =
>     TH> 18.71 MB/sec
>
>     TH> When it comes to real world test my scsibased system is almost
>     TH> twice as fast as the idebased one :) [...]
>
> Hmm, the IDE drive in my notebook beats that!
>
> defter:~# hdparm -tT /dev/hda
>
> /dev/hda:
>  Timing buffer-cache reads:   128 MB in  0.55 seconds =232.73 MB/sec
>  Timing buffered disk reads:  64 MB in  3.29 seconds = 19.45 MB/sec
>
> This is an IBM a30p, with a 5200? RPM 2.5" 48 GIG drive.
>
> So what are we concluding from this?  I choose to conclude nothing
> of major significance.
>
> cheers,
>
> BM
>
>
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