jianbosun ca227f7854 change memory usage display ...

using standard unix postfixes add unit test for display
also change doc for memory usage display change
for example GiB will be GB

Signed-off-by: Sun Jianbo <wonderflow@zju.edu.cn>
Upstream-commit: d6d8f45b04a6e6d0b616c85d1885342d3e676ec1
Component: engine

2015-04-11 20:04:34 +08:00

..

engine

change memory usage display

2015-04-11 20:04:34 +08:00