From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dario Faggioli <dario.faggioli@citrix.com>
Subject: Re: Xen NUMA memory allocation policy
Date: Fri, 20 Dec 2013 14:52:44 +0100
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To: Saurabh Mishra <saurabh.globe@gmail.com>
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On gio, 2013-12-19 at 15:48 -0800, Saurabh Mishra wrote:
> Hi Dario --
>=20
Hi,

> >Mmm... BTW, if I can ask, what's the config file for these domains?
>
> Here's the config file :-
>=20
>=20
> name =3D "hvm-vm6"
> boot =3D "c"
> memory =3D 98304
> vcpus =3D 32
> disk =3D [ 'file:<image,hda,w' ]
> vif =3D [ 'model=3De1000, mac=3D06:00:00:00:00:00, bridge=3Dbr0',
> 'model=3De1000, mac=3D06:00:01:00:00:00, bridge=3Dbr1' ]
> pci =3D [  '0000:07:10.0=3D0@0a', '0000:07:10.2=3D0@0b',
> '0000:07:10.4=3D0@0c', '0000:07:10.6=3D0@0d', '0000:07:11.0=3D0@0e',
> '0000:07:11.2=3D0@0f', '0000:07:10.1=3D0@10', '0000:07:10.3=3D0@11',
> '0000:07:10.5=3D0@12', '0000:07:10.7=3D0@13', '0000:07:11.1=3D0@14',
> '0000:88:10.0=3D0@15', '0000:88:10.2=3D0@16', '0000:88:10.4=3D0@17
> ', '0000:88:10.6=3D0@18', '0000:88:11.0=3D0@19', '0000:88:11.2=3D0@1a',
> '0000:88:10.1=3D0@1b', '0000:88:10.3=3D0@1c', '0000:88:10.5=3D0@1d',
> '0000:88:10.7=3D0@1e', '0000:88:11.1=3D0@1f' ]
> cpus =3D [  '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14',
> '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25',
> '26', '27', '28', '29', '30', '31', '32', '33', '34', '35' ]
>=20
Ok. The reason why I asked was that I was seeing you the memory for the
domain being allocated from multiple NUMA node, which is what happens by
default, so I was wondering whether there could be preblems somewhere...

However, now I see that that's because of this line above, pinning cpus
at creation time.

Thanks and Regards,
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)


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