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Re: [Xen-devel] Question about the current vcpu.


  • To: "p z" <zpengxen@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Zhiyuan Shao" <zyshao.maillist@xxxxxxxxx>
  • Date: Mon, 30 Mar 2009 16:22:28 +0800
  • Cc:
  • Delivery-date: Mon, 30 Mar 2009 01:23:02 -0700
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Hi,
 
Actually, defined by Credit scheduler, each PCPU (physical CPU, if you run Xen on a multi-core machine, you get multiple PCPUs) has its own runqueue, and its own current vcpu as well.
The PCPUs of the system makes their own scheduling decisions independently.
 
Best,
 
 
2009-03-30

Zhiyuan Shao

发件人: p z
发送时间: 2009-03-28  09:38:16
收件人: xen-devel@xxxxxxxxxxxxxxxxxxx
抄送:
主题: [Xen-devel] Question about the current vcpu.
Hi all,

 There is a macro current which may mean to get the current vcpu information.

 But  the physical machine may be multi-core ,thus there may be two or more vcpus running  in parallel on different cores.Then which vcpu is the current? How should  I understand the current vcpu please?
 
 Thanks.


Cheer,
--
zp

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