From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: xen 4.5.0 rtds scheduler perform poorly with 2vms Date: Wed, 2 Dec 2015 12:19:41 +0100 Message-ID: <1449055181.7833.341.camel@citrix.com> References: <1448410554.7833.119.camel@citrix.com> <1448644982.7833.290.camel@citrix.com> <1448814429.7833.303.camel@citrix.com> <1448960382.7833.307.camel@citrix.com> <2521561D-5389-4F81-B21D-54FD79252B51@gmail.com> <7FF14AD9-B52C-40B3-8217-A0979DC6F164@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============3141296580062092423==" Return-path: In-Reply-To: <7FF14AD9-B52C-40B3-8217-A0979DC6F164@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Lars Kurth , Meng Xu Cc: "Yu-An(Victor) Chen" , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org --===============3141296580062092423== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-bUdewmTfrzDx+NZH8D/b" --=-bUdewmTfrzDx+NZH8D/b Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2015-12-02 at 11:03 +0000, Lars Kurth wrote: > > On 2 Dec 2015, at 05:54, Meng Xu wrote: > >=20 > > Maybe we could add some health warning and add a link to this > > discussion? > > Misconfiguration of the system will usually cause performance > > degradation, even for the other schedulers, such as ARINC653, > > credit, > > credit2. >=20 > That is the minimum IMHO for the wiki and xl. >=20 I'm not so sure. Perhaps just a quick hint, in xl manpage, I'd say. > > What I'm thinking is how much expert information we should expose > > to > > users. Sometimes, exposing too much information may not be so > > helpful. > > Sometimes, more information just=C2=A0=C2=A0cause more confusion. >=20 > Maybe just link to some of the theory on real-time schedulers (at > least on the wiki). Maybe also to a couple of links to xen-devel@ > threads like this one. >=20 We can reference the thread on the wiki, and we can put a few sentences about all this there. However, trying to link "some relevant theory" is unpractical, as it won't be easy to define what both "some" and "relevant" mean. :-) I'd be in favour (and ca do so) of adding a reference to the RT-Xen website, and maybe to one of (the original?) RT-Xen paper. But nothing more. Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-bUdewmTfrzDx+NZH8D/b 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 iEYEABECAAYFAlZe080ACgkQk4XaBE3IOsRwKQCfdqdrvBIT9JPcNOXFuas80XNf yIEAnjOjiRhUmdXwrZ6C7+J8g+FJc7IN =383G -----END PGP SIGNATURE----- --=-bUdewmTfrzDx+NZH8D/b-- --===============3141296580062092423== 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 --===============3141296580062092423==--