memory allocation guidance

["Eric S. Johansson" <esj@harvee.org>]

I've been reading to the documentation and I'm not really clear on how 
to allocate memory.  The impression that gathered is that the allocation 
specification is the initial allocation given to a domain.  From there 
additional memory can be allocated/deallocated to a domain courtesy to 
balloon driver/handler.

I would appreciate a pointer to some documentation or some guidance in 
deciding how to allocate memory to a domain and how it will behave as 
the system runs.  No need for any deep system level information.  I'm 
really looking for operational guidelines and enough background to 
understand why the choices are made.

part of what triggers this request is that my xen server was acting 
funny (i.e. significant lags in processing, lots of paging) and I 
discovered a bad memory stick.  Much joy.  ;-)

---eric

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