[CentOS] partitioning order and IO performance
John R Pierce
pierce at hogranch.com
Wed Dec 23 03:14:06 UTC 2009
Ross Walker wrote:
> Also, for random IO the opposite is true, the rotational latency is
> significantly smaller on the inner tracks than the outer tracks, so
> random OPs perform better there.
>
um, most all hard disks are CAV, so the rotational latency measured in
milliseconds is constant throughout the disk. usually 50% of a turn is
the assumed mean rotational latency
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