From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: Strange interdependace between domains Date: Thu, 20 Feb 2014 19:22:25 +0100 Message-ID: <1392920545.32038.826.camel@Solace> References: <1646915994.20140213165604@gmail.com> <1392313015.32038.112.camel@Solace> <295276356.20140213222507@gmail.com> <6010385428.20140214120238@gmail.com> <1392398466.32038.334.camel@Solace> <752791084.20140217124616@gmail.com> <1392742549.32038.580.camel@Solace> <53039F55.3030901@terremark.com> <1392746781.32038.594.camel@Solace> <53059BB0.1000705@ts.fujitsu.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============5054450359051415728==" Return-path: In-Reply-To: <53059BB0.1000705@ts.fujitsu.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: Juergen Gross Cc: Ian Campbell , Andrew Cooper , Don Slutz , xen-devel@lists.xen.org, Simon Martin , Nate Studer List-Id: xen-devel@lists.xenproject.org --===============5054450359051415728== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-4I6/d7BIfMZDvSE7i73t" --=-4I6/d7BIfMZDvSE7i73t Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On gio, 2014-02-20 at 07:07 +0100, Juergen Gross wrote: > On 18.02.2014 19:06, Dario Faggioli wrote: > > While this one, although a bit more "boring" than the above, would > > probably be something quite valuable to have! > > > > I can only think of rather expensive ways of implementing it, involving > > going through all the cpupools and, for each cpupool, through all its > > cpus and check the topology relationships, but perhaps there are others > > (I'll think harder). > > > Adding some information like this would be nice, indeed. But I think we s= hould > not limit this to just hyperthreads. There are more levels of shared reso= urces, > like caches or memory interfaces on the same socket. In case we want to a= dd > information about potential performance influences due to shared resource= s, we > should be more generic. >=20 All true... To the point that I know also wonder what a suitable interface and a not too verbose output configuration could be... > And what about some NUMA information? Wouldn't it be worthwhile to show m= emory > locality information as well? This should be considered to be displayed b= y > "xl list", too. >=20 Indeed. I actually have an half backed series doing right that. It's a bit more complicated (still from an interface point of view), as that info resides in Xen, and some new hcall or similar is required to retrieve that. I'll post it in early 4.5 dev cycle. Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-4I6/d7BIfMZDvSE7i73t 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 iEYEABECAAYFAlMGR+EACgkQk4XaBE3IOsRsegCglnaBiAilnM19XUJh0rwIfr9C S/YAnjzgEKStoFLyFamPM9luR2R9qr1G =5KCq -----END PGP SIGNATURE----- --=-4I6/d7BIfMZDvSE7i73t-- --===============5054450359051415728== 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 --===============5054450359051415728==--