[CentOS] partitioning order and IO performance
William L. Maltby
CentOS4Bill at triad.rr.comWed Dec 23 15:28:44 UTC 2009
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On Wed, 2009-12-23 at 09:37 -0500, Ross Walker wrote: > <snip> > I think you might be confusing CAV with CLV of optical drives. > > http://en.m.wikipedia.org/wiki/Constant_Angular_Velocity > > -Ross That was my thought. However, I think most are missing the boat on this. I have always looked at the anticipated work profile on the drive and tried to place partitions to minimize seek time - that being the single biggest latency issue, IMO. By placing the most frequently accessed partitons adjacent to each other, and near the middle of the platter(s), seek delays are minimized. With the advent of LVM, I feel this is more easily fine tuned, initially and later after the /real/ workload can be statistically profiled. -- Bill
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