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Date:      Fri, 16 Sep 2005 11:23:46 -0400
From:      Kris Kennaway <kris@obsecurity.org>
To:        Oliver Lehmann <lehmann@ans-netz.de>
Cc:        current@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject:   Re: low(er) disk performance with sched_4bsd then with sched_ule
Message-ID:  <20050916152346.GA27708@xor.obsecurity.org>
In-Reply-To: <20050916163726.729ada59.lehmann@ans-netz.de>
References:  <20050914194612.15692485.lehmann@ans-netz.de> <43286E37.40203@samsco.org> <20050914222013.178dc4dc.lehmann@ans-netz.de> <84dead72050914135239514c49@mail.gmail.com> <20050915000053.448f251b.lehmann@ans-netz.de> <84dead7205091500152a7c25d1@mail.gmail.com> <20050915172005.072f4bdf.lehmann@ans-netz.de> <20050915181238.54b16b4b.lehmann@ans-netz.de> <20050915213719.GA26998@xor.obsecurity.org> <20050916163726.729ada59.lehmann@ans-netz.de>

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On Fri, Sep 16, 2005 at 04:37:26PM +0200, Oliver Lehmann wrote:
> Hi Kris,
>=20
> Kris Kennaway wrote:
>=20
> > What about using schedgraph as I suggested previously?
>=20
> After I installed py24-tkinter and all the dependencies, I recompiled the=
 kernel and so on, but it seems not to work:
>=20
> root@nudel olivleh1> dd if=3D/dev/zero of=3D/mnt/files/test.dd bs=3D64k c=
ount=3D32000
> 32000+0 records in
> 32000+0 records out
> 2097152000 bytes transferred in 379.623777 secs (5524290 bytes/sec)
> root@nudel olivleh1> ktrdump -ct > ule.ktr.out
> root@nudel olivleh1> grep ULE /usr/src/sys/i386/conf/NUDEL=20
> options         SCHED_ULE

And you enabled the correct KTR options in your kernel, right?

Kris

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