From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dario Faggioli <dario.faggioli@citrix.com>
Subject: Re: CAP and performance problem
Date: Thu, 6 Jun 2013 15:03:55 +0200
Message-ID: <1370523835.18519.248.camel@Solace>
References: <519B3832.30608@di.unipmn.it>
	<1370451024.18519.190.camel@Solace> <1370452319.18519.197.camel@Solace>
	<51AF6FBD.9090007@di.unipmn.it> <1370507870.18519.224.camel@Solace>
	<51B04F0E.5040506@di.unipmn.it> <51B066CC.4060900@ts.fujitsu.com>
	<51B067F1.1010008@eu.citrix.com> <51B08606.9090105@di.unipmn.it>
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="===============6761814787633996087=="
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <51B08606.9090105@di.unipmn.it>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Massimo Canonico <mex@di.unipmn.it>
Cc: George Dunlap <george.dunlap@eu.citrix.com>, Juergen Gross <juergen.gross@ts.fujitsu.com>, xen-devel@lists.xen.org
List-Id: xen-devel@lists.xenproject.org

--===============6761814787633996087==
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature"; boundary="=-jRpo6ghWDNfbmb7ZhkkP"

--=-jRpo6ghWDNfbmb7ZhkkP
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

On gio, 2013-06-06 at 14:52 +0200, Massimo Canonico wrote:
> On 06/06/2013 12:44 PM, George Dunlap wrote:
> >> You can test this by setting the xen hypervisor boot option
> >>
> >> cpufreq=3Dnone
> >>
> >> and run your test again (with and without cap).
> >
> > Ah, genius Juergen!  That would make total sense.
> >
> >  -George
> >
> Unfortunately, this did not change much. I set "cpufreq=3Dnone" in the=
=20
> boot line and restart my experiment.
> With no cap I got 298.029
> with cap=3D50% I got 910.272
> (average values of 3 experiments for each cap setting)
>=20
Mmm... 298.029 is a lot faster than what you reported before, though...
Are this the exact same experiments?

In fact, in the first e-mail of this thread you said that "with CAP =3D
100% I got my results in about 600 seconds". So, have you changed
something or the cpufred=3Dnone did at least have some effect?

Dario

--=20
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


--=-jRpo6ghWDNfbmb7ZhkkP
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: This is a digitally signed message part
Content-Transfer-Encoding: 7bit

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.13 (GNU/Linux)

iEYEABECAAYFAlGwiLsACgkQk4XaBE3IOsSkZACfQTLWGMfjIuSDdkJH0zVaSF0h
D7MAmwTMtAEi7dZDMh7uOFgpsC+ta/yp
=mvQc
-----END PGP SIGNATURE-----

--=-jRpo6ghWDNfbmb7ZhkkP--


--===============6761814787633996087==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

--===============6761814787633996087==--