delete old files.
insert profile output into data.frame.
data.frame's time is bad...
time skip problem was solved!
multiplot
data length is bad ...
remove original multiplot.
time axis's record number equal to each nodes'.
before,  add df_hr data.frame.
reshape data.fram, and plot datas in a graph.
add title and labels
fix title
ggplot param change.
[make hdfs client trace profiler:]