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Date:      Tue, 15 Jan 2013 16:27:48 -0800
From:      Dieter BSD <dieterbsd@gmail.com>
To:        freebsd-hackers@freebsd.org
Subject:   Re: IBM blade server abysmal disk write performances
Message-ID:  <CAA3ZYrANmX=ixNrUag41%2Bbkyp=HTROfE3DscBWSiew00qB4eqg@mail.gmail.com>

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I wrote:
> The kernel must be doing write-behind even to a raw disk, otherwise
> waiting for write(2) to return before issuing the next write would
> slow it down as Matthew suggests.

And a minute after hitting send, I remembered that FreeBSD does not
provide the traditional "raw" disk devices, e.g. /dev/rda0 with an 'r'.
(Now if I could just remember *why* it doesn't.)



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