FreeBSD, SSD's and partition alignment

[Peter Schuller]

> Note that even the Intel X25-M series seem to slow down in random write
> speed when the complete disk is filled and there are no cells left that the
> controller knows are free. Most benchmarks out there are run on an empty
> Intel SSD. When you rerun that test several times, it'll slowly settle on a
> much lower random write speed.

My understanding is that the performance drop should only come from
*sustained* high write iops; i.e., when you effectively exhaust the
free space necessary to perform the writes sequentially but
temporarily. But on the other hand if you are only bursting, I was
under the impression these guys did background re-writing such that no
permanent performance drop need be expected.

Is this not the case for the X25-M or others?

-- 
/ Peter Schuller

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