[Xen-users] Low-mem balloon value and High-mem balloon value meaning?

[Huang Yogi <chi7396@xxxxxxxxxxx>]

Hi all

1.   As the book refer the Low-mem balloon is how much the collection of low-mem can be expanded(the same goes for the High-mem), could anyone can explain it more detail?

2.    When will it  start to use the Low-mem balloon value or High-mem balloon value? when  lack of host (physical) memory and it started balloon out? 

3.    Whem I started to create a new vm (each vm given 256 mb), and where the 256mb comes from?
        It's from the host(physical) resource memory directly  or the host(physical) resource through the dom0  or the dom0 resource (which has  allocated from the host) ?

4.    After changing the (mem-set ID mem) memory value , how to figure out the changed memory value?
       Through the /proc/xen/balloon list or commamd free? or it without notifying Dom0?


I have  read the book (running XEN) and the past xen-user-list but still can not understand the memory allocation, Could anyone please help to explain these more detail!
And thanks for your patience!!
         < br> Best regards,   

  Yogi  Huang

  -chi7396@xxxxxxxxxxx

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