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Date: Sat, 14 May 2005 18:48:47 +0400
From: Vladimir Dzhivsanoff <vohand@gmail.com>
To: Pawel Jakub Dawidek <pjd@freebsd.org>
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cc: freebsd-stable@freebsd.org
Subject: Re: gmirror
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On 5/14/05, Pawel Jakub Dawidek <pjd@freebsd.org> wrote:
> On Sat, May 14, 2005 at 05:57:51PM +0400, Vladimir Dzhivsanoff wrote:
> +> > This is the way RAID1 works. Try to imagine how disk's heads are mov=
ing
> -
> +> > there will be no speed-up in sequential reads, this is not RAID0.
> +> >=20
> +> > Mirror characteristics are:
> +> > - the same speed for sequential reads as for one disk;
> +> > - the same speed for sequential/random write as for one disk;
> +> > - double speed of one disk for random reads;
> +> by what test-suite I can test it ?
> +> and what balance algorithm is more proper for random reads ?
>=20
> There is my tool in ports (benchmarks/raidtest/) which does what you want=
.
> The README file wasn't moved to ports, IIRC, you can find it here:
>=20
big thanks, Pawel=20


> =09http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/tools/raidtest/Attic/R=
EADME?rev=3D1.2&content-type=3Dtext/x-cvsweb-markup&hideattic=3D0
>=20
> --=20
> Pawel Jakub Dawidek                       http://www.wheel.pl
> pjd@FreeBSD.org                           http://www.FreeBSD.org
> FreeBSD committer                         Am I Evil? Yes, I Am!
>=20
>