tree 6d5a63f0653abb15820b5340e6594e9de5cb1e1e
parent 94713885ae90fc925ac9be38311269c8527f490e
author Yangster-mac <yanglu@google.com> 1516839406 -0800
committer Yang Lu <yanglu@google.com> 1517008622 +0000

Cpu usage optimization:
1/ Avoid unnecessary field/dimension proto construction.
2/ use unordered_map for slicing.
3/ Use dimension fields to compare dimension keys.

Test: all statsd tests passed.
Change-Id: I2f74f78589b7f6ecd0803a2ead822b8d0399f334