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Add an option to plot virtual memory instead of real memory #23

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Add an option to plot virtual memory instead of real memory #23

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33 changes: 21 additions & 12 deletions psrecord/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,10 @@ def main():
parser.add_argument('--plot', type=str,
help='output the statistics to a plot')

parser.add_argument('--plot-virtual-memory',
help='plot virtual memory also along with real memory',
action='store_true')

parser.add_argument('--duration', type=float,
help='how long to record for (in seconds). If not '
'specified, the recording is continuous until '
Expand Down Expand Up @@ -105,15 +109,17 @@ def main():
sprocess = subprocess.Popen(command, shell=True)
pid = sprocess.pid

monitor(pid, logfile=args.log, plot=args.plot, duration=args.duration,
interval=args.interval, include_children=args.include_children)
monitor(pid, logfile=args.log, plot=args.plot,
plot_virtual_memory=args.plot_virtual_memory,
duration=args.duration, interval=args.interval,
include_children=args.include_children)

if sprocess is not None:
sprocess.kill()


def monitor(pid, logfile=None, plot=None, duration=None, interval=None,
include_children=False):
def monitor(pid, logfile=None, plot=None, plot_virtual_memory=None,
duration=None, interval=None, include_children=False):

pr = psutil.Process(pid)

Expand Down Expand Up @@ -209,20 +215,23 @@ def monitor(pid, logfile=None, plot=None, duration=None, interval=None,
import matplotlib.pyplot as plt

fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)

ax.plot(log['times'], log['cpu'], '-', lw=1, color='r')

ax = fig.add_subplot(1, 1, 1)
ax.plot(log['times'], log['cpu'], '-', lw=1, color='r', label='cpu%')
ax.set_ylabel('CPU (%)', color='r')
ax.set_xlabel('time (s)')
ax.set_ylim(0., max(log['cpu']) * 1.2)
ax.legend(loc=2)

ax2 = ax.twinx()

ax2.plot(log['times'], log['mem_real'], '-', lw=1, color='b')
ax2.set_ylim(0., max(log['mem_real']) * 1.2)

ax2.set_ylabel('Real Memory (MB)', color='b')
ax2.plot(log['times'], log['mem_real'], '-', lw=1, color='b', label='real')
if plot_virtual_memory:
ax2.plot(log['times'], log['mem_virtual'], '-', lw=1, color='g', label='virt')
ax2.set_ylim(0., max(log['mem_virtual']) * 1.0)
else:
ax2.set_ylim(0., max(log['mem_real']) * 1.2)
ax2.set_ylabel('Memory (MB)', color='b')
ax2.legend(loc=1)

ax.grid()

Expand Down