tree 94a12f672d5a05d081c60576a440fd2f74c3627e
parent d682ec18911538429c10921ae303458863380fbe
author Jing Jin <jingjin@google.com> 1466617796 -0700
committer Jing Jin <jingjin@google.com> 1466790465 +0000

lib/stats: add history graphs for counters in debug browser.

- Use counters to record all sys stats.

- Show history graphs in counter's stat page.
  + Collect data from counter's three time series (1m, 10m, 1h).
  + Add javascript/css to render graphs with duration selectors.

- Minor improvements/fix:
  + Show stat name in all stat pages.
  + Add pretty print for TimeSeries data type.
  + Use the tail time (instead of the head time) for the start time of a time series.

It looks like this:
https://screenshot.googleplex.com/OyY3zCYekOn

Change-Id: I53b838c8470abe7ee76a3d460c4bea12cd1121e5