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From: Paul Allen <nospam@nospam.com>
To: Luigi Rizzo <rizzo@icir.org>
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Cc: freebsd-current@freebsd.org, lulf@stud.ntnu.no, Ivan Voras <ivoras@fer.hr>,
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Subject: Re: Pluggable Disk Schedulers in GEOM
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>From Luigi Rizzo <rizzo@icir.org>, Fri, Jan 05, 2007 at 02:59:15PM -0800:
> that does not mean that a scheduler is useless in general.
> in fact, what i find questionable is hardwiring unnecessary
> (in the sense that they are done only for performance reasons)
> ordering constraints in the layers above. I cannot comment for
I agree in so much as my point was strictly focused on ordering
constraints imposed for consistency reasons.

softupdates is not a performance mechanism per se; it is a 
mechanism to allow async writes of fs data occur in a consistent 
fashion.

Anyways, you can easily resolve this issue by mounting async with
softupdates disabled and then repeating the test.