RE: ***DHSPAM*** [Xen-users] Xen DomU memory allocation [regd]

["[STD]Ein" <ein@xxxxxxxxxxxxxx>]

What you are looking for is Numa capabilities for Xen, which unfortunately I don’t believe exists just yet, at least in the capacity that you are asking.

 

From what I can tell by reading discussion threads, Xen (should) export Numa information to guests about cpu to memory page distances, so a numa aware guest (linux 2.5/2.6, windows 2003 server and newer.. etc) will be able to take advantage of that information for scheduling processes, but I don’t believe Xen in itself can assign memory based on the distance to the vcpu’s used for that guest.  At least, not yet.

 

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From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of dinesh chandrasekaran
Sent: June 3, 2008 3:39 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: ***DHSPAM*** [Xen-users] Xen DomU memory allocation [regd]

 

 

Hi All,

              I use a dual core processor on which xen runs (since one of them becomes the master, xen and Dom0 gets loaded from the memory behind that processor).

How and where would I have to change the configuration under xen to force it to use the memory behind other processor for allocating guest memory (DomUs), if created one.

Thanks,
Dinesh C

 

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