FFS - Still using rotational delay with modern disks?
dieterbsd at engineer.com
Mon Dec 17 21:44:21 UTC 2012
The newfs man page says:
Specify the maximum number of contiguous blocks that will be laid
out before forcing a rotational delay. The default value is 16.
See tunefs(8) for more details on how to set this option.
Is this still a good idea with modern drives where the number of
sectors per track varies, and no one but the manufacturer knows how
many sectors a particular track has?  Skipping sectors could
unnecessarily force a seek to the next track, thus hurting rather
than helping performance.
I have to wonder if FreeBSD even supports any hard drives that
don't use zone bit recording?
The tunefs man page does not mention this parameter.
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