todo

xen 3.2.2 源码

Display error messages on the help line after bad input at a prompt.
Fractional delay times
Use prompting to search for domains
Better line editing?

* Make CPU in % more accurate
* Domain total network TX % and RX %

Like Top, f feature, field select of domain columns, toggle the display of
field by typing the letter associated with field, if displayed it shows in
bold and the letter is Capitalized along with a leading asterisk for the
field, if not selected for display letter is lowercase, no leading asterisk
and field is not bolded.

Like Top, ordering of domain columns, o feature Capital letter shifts left,
lowercase letter shifts right?

Color
Full management: pause, destroy, create domains

Add support for Virtual Block Devices (vbd)

To think about:
Support for one than one node display (distributed monitoring 
from any node of all other nodes in a cluster)
Bottom line option (Switch node, Search node [tab completion?])

Capture/Logging of resource information generated during a time interval.
-b batch mode dump snapshots to standard output (used with -n)
-n number of iterations to dump to standard output (unlimited if not specified)
-d monitor DomIDs as -dD1,-dD2 or -dD1,D2...
   Monitor only domains with specified domain IDs
-m monitor nodeIDs as -mN1,-mN2 or -mN1,N2...
   Monitor only domains with specified node IDs