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Date:      Thu, 22 Apr 2010 03:17:12 -0700
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        Jordi Espasa Clofent <jespasac@minibofh.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: gmirror(8) rebuild speed
Message-ID:  <20100422101711.GA54482@icarus.home.lan>
In-Reply-To: <4BD0134D.1060305@minibofh.org>
References:  <4BCFF881.9000809@minibofh.org> <20100422085954.GA10035@duncan.reilly.home> <4BD0134D.1060305@minibofh.org>

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On Thu, Apr 22, 2010 at 11:13:49AM +0200, Jordi Espasa Clofent wrote:
> >To make it slower, I assume?  When is that a good idea?
> 
> It depends on what status your server are.
> For example:
> 
> - if I've a fsck in background so the I/O is high, maybe I want to
> make it slower
> - If the box is completey unloaded maybe I want to make it quicker

RELENG_8 just had the GEOM scheduler code committed to it, which might
be able to provide what the OP is wanting.

Commits:

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/geom/sched/

README itself:

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/geom/sched/README?rev=1.1.2.2;content-type=text%2Fplain

-- 
| Jeremy Chadwick                                   jdc@parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |




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