Github user maoling commented on the issue:
https://github.com/apache/zookeeper/pull/629
exec `echo mntr | nc localhost 2181`
look at the result:the `avg_latency` is too small due to the` count` is
large.should we ignore `Ping` request?
> zk_avg_latency 0.7561
> zk_max_latency 48
> zk_min_latency 0---
