Hi! I have a system with i7 cpu. Quad core + hyperthreading == 4 cores and 8 cpu''s. I want to attach to a one domU exclusive 1 core == 2 cpus. With this: vcpus = 2 cpus = [ ''3'', ''7'' ] I attach the 4th core and ht on this core to this domU. But if I do xm vcpu-list, I see this: Name ID VCPU CPU State Time(s) CPU Affinity Domain-0 0 0 4 r-- 24725.7 any cpu Domain-0 0 1 1 -b- 414.5 any cpu Domain-0 0 2 1 -b- 410.6 any cpu Domain-0 0 3 2 -b- 1745.6 any cpu Domain-0 0 4 1 -b- 382.8 any cpu Domain-0 0 5 1 -b- 347.1 any cpu Domain-0 0 6 7 -b- 977.1 any cpu Domain-0 0 7 0 -b- 1843.5 any cpu linux1 2 0 5 -b- 1761.8 any cpu linux2 4 0 6 -b- 5045.3 any cpu minixp-crypted 16 0 0 -b- 1330.7 any cpu minixp-test-crypted 17 0 6 -b- 1677.7 any cpu linux-important 3 0 3 -b- 5897.5 3 linux-important 3 1 7 -b- 3903.6 7 so the domU linux-important gets these cpu''s but all other get any cpu! I can attach all other cpu''s to other domU''s with vcpus = 1 cpus = ''0-2,4-6'' but how can I block these cpu''s to dom0? It is generally a good idea? Or it is better to attach to this domU 2 vcpus and leave the cpu management in xen? Greetz PS: sorry for my english _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Christoph Look into /etc/xen/xend-config.sxp and the setting (dom0-cpus 0) see the explanation below from the config file. # In SMP system, dom0 will use dom0-cpus # of CPUS # If dom0-cpus = 0, dom0 will take all cpus available (dom0-cpus 0) Or look into this old mailinglist thread http://lists.xensource.com/archives/html/xen-users/2006-02/msg00817.html I think it explains a lot. Hope that helps. Antonino Catinello -----Ursprüngliche Nachricht----- Von: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] Im Auftrag von Christoph Kaminski Gesendet: Samstag, 23. Mai 2009 10:33 An: xen-users Betreff: [Xen-users] CPU management Hi! I have a system with i7 cpu. Quad core + hyperthreading == 4 cores and 8 cpu''s. I want to attach to a one domU exclusive 1 core == 2 cpus. With this: vcpus = 2 cpus = [ ''3'', ''7'' ] I attach the 4th core and ht on this core to this domU. But if I do xm vcpu-list, I see this: Name ID VCPU CPU State Time(s) CPU Affinity Domain-0 0 0 4 r-- 24725.7 any cpu Domain-0 0 1 1 -b- 414.5 any cpu Domain-0 0 2 1 -b- 410.6 any cpu Domain-0 0 3 2 -b- 1745.6 any cpu Domain-0 0 4 1 -b- 382.8 any cpu Domain-0 0 5 1 -b- 347.1 any cpu Domain-0 0 6 7 -b- 977.1 any cpu Domain-0 0 7 0 -b- 1843.5 any cpu linux1 2 0 5 -b- 1761.8 any cpu linux2 4 0 6 -b- 5045.3 any cpu minixp-crypted 16 0 0 -b- 1330.7 any cpu minixp-test-crypted 17 0 6 -b- 1677.7 any cpu linux-important 3 0 3 -b- 5897.5 3 linux-important 3 1 7 -b- 3903.6 7 so the domU linux-important gets these cpu''s but all other get any cpu! I can attach all other cpu''s to other domU''s with vcpus = 1 cpus = ''0-2,4-6'' but how can I block these cpu''s to dom0? It is generally a good idea? Or it is better to attach to this domU 2 vcpus and leave the cpu management in xen? Greetz PS: sorry for my english _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Sat, May 23, 2009 at 3:33 PM, Christoph Kaminski <mangel@gmx.de> wrote:> but how can I block these cpu''s to dom0?http://markmail.org/message/wedoyb6q4lkhtfbg -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
U may read my tread for understand http://markmail.org/search/?q=VCPU+amount&x=0&y=0#query:VCPU%20amount +page:1+mid:hewkscf3ouib755x+state:results 23 мая 2009, в 11:33, Christoph Kaminski написал(а):> Hi! > > > I have a system with i7 cpu. Quad core + hyperthreading == 4 cores > and 8 cpu''s. I want to attach to a one domU exclusive 1 core == 2 > cpus. With this: > > vcpus = 2 > cpus = [ ''3'', ''7'' ] > > I attach the 4th core and ht on this core to this domU. But if I do > xm vcpu-list, I see this: > > Name ID VCPU CPU State Time(s) > CPU Affinity > Domain-0 0 0 4 r-- 24725.7 > any cpu > Domain-0 0 1 1 -b- 414.5 > any cpu > Domain-0 0 2 1 -b- 410.6 > any cpu > Domain-0 0 3 2 -b- 1745.6 > any cpu > Domain-0 0 4 1 -b- 382.8 > any cpu > Domain-0 0 5 1 -b- 347.1 > any cpu > Domain-0 0 6 7 -b- 977.1 > any cpu > Domain-0 0 7 0 -b- 1843.5 > any cpu > linux1 2 0 5 -b- 1761.8 > any cpu > linux2 4 0 6 -b- 5045.3 > any cpu > minixp-crypted 16 0 0 -b- 1330.7 > any cpu > minixp-test-crypted 17 0 6 -b- 1677.7 > any cpu > linux-important 3 0 3 -b- 5897.5 3 > linux-important 3 1 7 -b- 3903.6 7 > > so the domU linux-important gets these cpu''s but all other get any > cpu! > I can attach all other cpu''s to other domU''s with > > vcpus = 1 > cpus = ''0-2,4-6'' > > but how can I block these cpu''s to dom0? > > It is generally a good idea? Or it is better to attach to this domU > 2 vcpus and leave the cpu management in xen? > > Greetz > > PS: sorry for my english > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users