On Mon, April 12, 2010 10:48, Tomas Ögren wrote:
> On 12 April, 2010 - Bob Friesenhahn sent me these 0,9K bytes:
>
>> Zfs is designed for high thoughput, and TRIM does not seem to improve
>> throughput.  Perhaps it is most useful for low-grade devices like USB
>> dongles and compact flash.
>
> For flash to overwrite a block, it needs to clear it first.. so yes,
> clearing it out in the background (after erasing) instead of just before
> the timing critical write(), you can make stuff go faster.

Except that ZFS does not overwrite blocks because it is copy-on-write.


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