From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: co-scheduler modification Date: Mon, 09 Jul 2012 16:19:24 +0200 Message-ID: <1341843564.3657.6.camel@Abyss> References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4257392000318355187==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Kerti Csaba Cc: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org --===============4257392000318355187== Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-EF4uRkT6gvCHboULzo8C" --=-EF4uRkT6gvCHboULzo8C Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sun, 2012-07-08 at 15:47 +0200, Kerti Csaba wrote:=20 > In my experience I need to modify a bit the Xen Scheduler. I need to > implement a type of co-scheduling algorithm, which is try to schedule > those VMs (on physical machines) together which are communicating > together.=20 > Sounds very reasonable in principle, but do expect to deal with weird situation and to consider counterintuitive solutions to them, as George already stated. > I still haven=E2=80=99t decided that which scheduler will I modify(SEDF o= r > Credit). >=20 Just wanted to add that sedf _should_ be easy enough to understand and modify for this purpose, and it does not do anything like that yet (as opposed to credit), at least when it wears its "pure real-time" shoes. Unfortunately, it's not in such a good shape, e.g., it has a very poor SMP support, which would need make the life of people wontting to work with it harder that it should be. Not that this should prevent you to look at it... I just wanted to be sure you're aware want you'll find there. :-) Regards, Dario=20 --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-EF4uRkT6gvCHboULzo8C 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 v1.4.12 (GNU/Linux) iEYEABECAAYFAk/66GwACgkQk4XaBE3IOsTg2gCeMvZ4zTyIFL8/RvH5ITVSGVaT v/QAoJ0D3l8a8rUZpBeAQi1tSVW39Bqe =Ilij -----END PGP SIGNATURE----- --=-EF4uRkT6gvCHboULzo8C-- --===============4257392000318355187== 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 --===============4257392000318355187==--