[Ti] [Ti]Journaling, was --> Journeling.
Kynan Shook
kshook at cae.wisc.edu
Mon Aug 9 17:53:10 PDT 2004
Actually, most drives write faster than they read; I'm not sure exactly
why this is the case, but here are several "drive comparison" pages
from barefeats.com that can back me up; the only tests that aren't
totally behind my position here are the 15,000 RPM Ultra320 SCSI
drives, but they're really all over the map; some support you, some
support me. The other two pages (serial ATA and notebook drives) show
that writing is generally faster than reading. I do, however,
completely agree with your random versus sequential analysis; it takes
the drive a little bit of time to jump around and find the right
cylinder to read from.
http://www.barefeats.com/hard27.html
http://www.barefeats.com/hard31.html
http://www.barefeats.com/hard28b.html
On Aug 7, 2004, at 12:22 PM, b wrote:
> A few 'pointers' drives read faster thn they write, and they read
> sequentially-oriented files faster than randomly located files.
>
> Packet size, state of the drives fragmentation and free space, and
> size of the file also affects speed (not just the 'time', but actual
> per second transfer rate).
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