cowloop technology

Kris Kennaway kkenn at
Thu Jan 19 12:55:20 PST 2006

On 2006-01-19, Andreas Hauser <andy at xxxxxxxxxxxxxxx> wrote:
> kkenn wrote @ Sun, 15 Jan 2006 04:45:07 -0500:
>> Is there even any evidence that it costs performance?
> Yes. Look into FreeBSD mailinglist archives and find it doubling the time
> for some tests (afair phk then implemented some direct passthrough that
> mends it a bit). Since the whole concept of GEOM also leads one to think
> that it must be slower, maybe FreeBSD can show benchmarks, that show, that
> it is not indeed slower.

Well, I asked because I *have* measured and found no measurable
performance lost in real-world scenarios.  Can you be more specific
about the reference you are thinking of?


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