tree 9a7c223565ed3da3929c94d6c5ce252880f59a78
parent d83b90bf2c241dc21de3e60fd2915fd0a746e43a
author Jungho Ahn <jhahn@google.com> 1417456862 -0800
committer Jungho Ahn <jhahn@google.com> 1417456866 -0800

Add Min/Max and formatter to Histogram

o Add Tracker for tracking min/max based on Robin's cl.
o Add min/max to HistogramValue
o Add formatted printing to HistogramValue
  - Merged veyron.io/veyron/veyron/tools/debug/impl.go and
    BenchStats.Write in cl/7082.
  - Output e.g.

Count: 50  Min: 1  Max: 50  Avg: 25.50
------------------------------------------------------------
[  1,   2)   1    2.0%    2.0%
[  2,   4)   2    4.0%    6.0%
[  4,   8)   4    8.0%   14.0%  #
[  8,  16)   8   16.0%   30.0%  ##
[ 16, inf)  35   70.0%  100.0%  #######

Change-Id: I876266c46fd603325170d9b5dcf51b007a1c2126