PattiMichelle
2008-Nov-18 15:40 UTC
[Xen-users] Changing CPUs-per-socket (Xen config file)?
Hello: I''m looking for where to change the setting for the number of CPUs per socket in Xen (openSuSE11.0 x86_64). I have a 32-processor machine (8 quad-core opterons) and was told on bugzilla: "By default, xen exposes virtual CPUs as sockets as opposed to cores. w2k3 EE only supports 8 sockets. You can edit your config file cpuid stanza to effectively set the number of cores per socket." I have Win2003Server Enterprise edition which I have verified will use at least 16 cores, but so far sees only 8 under Xen, irrespective of the setting I make in the KDE Xen VM manager applet. Can anyone help me? I don''t know which config file this is referring to and what settings to make in the cpuid stanza. I need to tell Xen to use between 2 and 4 cores per socket. THANKS!!!!!!!!!!!!!!! patti _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Andrew Lyon
2008-Dec-18 11:04 UTC
Re: [Xen-users] Changing CPUs-per-socket (Xen config file)?
On Tue, Nov 18, 2008 at 3:40 PM, PattiMichelle <miche1@earthlink.net> wrote:> Hello: > I''m looking for where to change the setting for the number of CPUs per > socket in Xen (openSuSE11.0 x86_64). I have a 32-processor machine (8 > quad-core opterons) and was told on bugzilla: > > "By default, xen exposes virtual CPUs as sockets as opposed to cores. w2k3 > EE only supports 8 sockets. > You can edit your config file cpuid stanza to effectively set the number of > cores per socket." > > I have Win2003Server Enterprise edition which I have verified will use at > least 16 cores, but so far sees only 8 under Xen, irrespective of the > setting I make in the KDE Xen VM manager applet. Can anyone help me? I > don''t know which config file this is referring to and what settings to make > in the cpuid stanza. I need to tell Xen to use between 2 and 4 cores per > socket. > > THANKS!!!!!!!!!!!!!!! > patti > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >This setting will expose 8 core cpu''s to the vm: cpuid=[''1:edx=xxx1xxxxxxxxxxxxxxxxxxxxxxxxxxxx,ebx=xxxxxxxx00010000xxxxxxxxxxxxxxxx'',''4,0:eax=001111xxxxxxxxxxxxxxxxxxxxxxxxxx''] Requires Xen 3.4. Andy _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users