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Copy pathplot_cpu.py
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87 lines (74 loc) · 2.23 KB
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'''
Plot CPU utilization of each virtual host.
'''
from helper import *
parser = argparse.ArgumentParser("Plot stacked bar chart of CPU usage")
parser.add_argument('--files', '-f',
help="File to read CPU usage from.",
required=True,
nargs="+",
dest="files")
parser.add_argument('--out', '-o',
help="Output png for plot",
default=None,
dest="out")
parser.add_argument('-s', '--summarise',
help="Summarise the time series plot (boxplot). First 10 and last 10 values are ignored.",
default=False,
dest="summarise",
action="store_true")
parser.add_argument('--labels', '-l',
help="Labels for x-axis if summarising; defaults to file names",
required=False,
default=None,
nargs="+",
dest="labels")
args = parser.parse_args()
if args.labels is None:
args.labels = args.files
def aggregate(data):
"""Aggregates to give a total cpu usage"""
data = map(list, data)
return map(sum, zip(*data))
def plot_series():
data = parse_cpu_usage(args.files[0])
N = len(data)
data = transpose(data)
ind = range(N)
width=1
colours = ['y','g','r','b','purple','brown','cyan']
legend = "user,system,nice,iowait,hirq,sirq,steal".split(',')
nfields = 7
legend = legend[0:nfields]
p = [0]*nfields
bottom = [0]*N
plt.ylabel("CPU %")
plt.xlabel("Seconds")
for i in xrange(nfields):
p[i] = plt.bar(ind[0:N], data[i], width, bottom=bottom, color=colours[i])
for j in xrange(N):
bottom[j] += data[i][j]
plt.legend(map(lambda e: e[0], p), legend)
def plot_summary():
plt.ylabel("CPU %")
to_plot=[]
for f in args.files:
data = parse_cpu_usage(f)
N = len(data)
data = transpose(data)
ind = range(N)
data = aggregate(data)
to_plot.append(data[10:-10])
plots = plt.boxplot(to_plot)
plt.yticks(range(0,110,10))
plt.title("CPU utilisation")
plt.grid()
plt.xticks(range(1, 1+len(args.files)), args.labels)
if args.summarise:
plot_summary()
else:
plot_series()
if args.out is None:
plt.show()
else:
plt.savefig(args.out)