Pros and Cons of amd64 (versus i386).
peterjeremy at optushome.com.au
Sun Apr 9 08:09:54 UTC 2006
On Sat, 2006-Apr-08 18:00:56 -0600, Scott Long wrote:
>Modern disks (I don't know how to define a cutoff to this term,
I got my first ZBR (zone-block recording) Seagate SCSI disk at work
about 20 years ago. I'm not sure when it became common.
>other day. I'm still not clear on whether the drive starts recording
>at the outer rim or the inner rim of the disk, and that could very well
>different between manufacturers.
Traditionaly hard disks have cylnder 0 at the outside. It's possible
that some manufacturers may have swapped this. Note that CDs and DVD
have block 0 at the inside and so the best I/O performance is usually
at the end of the disk.
> The only way to get a 'fair' comparison is to use
>separate identical disks with identical partition layouts for each
>of your OS installs.
If disk I/O is an issue, maybe even newfs the partitions for each test.
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