.. note:: :class: sphx-glr-download-link-note Click :ref:`here ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_gallery_specialty_plots_system_monitor.py: ============== System Monitor ============== .. image:: /gallery/specialty_plots/images/sphx_glr_system_monitor_001.png :class: sphx-glr-single-img .. rst-class:: sphx-glr-script-out Out: .. code-block:: none 75.0 frames per second | .. code-block:: python import time import matplotlib.pyplot as plt import numpy as np def get_memory(t): "Simulate a function that returns system memory" return 100 * (0.5 + 0.5 * np.sin(0.5 * np.pi * t)) def get_cpu(t): "Simulate a function that returns cpu usage" return 100 * (0.5 + 0.5 * np.sin(0.2 * np.pi * (t - 0.25))) def get_net(t): "Simulate a function that returns network bandwidth" return 100 * (0.5 + 0.5 * np.sin(0.7 * np.pi * (t - 0.1))) def get_stats(t): return get_memory(t), get_cpu(t), get_net(t) fig, ax = plt.subplots() ind = np.arange(1, 4) # show the figure, but do not block plt.show(block=False) pm, pc, pn = plt.bar(ind, get_stats(0)) pm.set_facecolor('r') pc.set_facecolor('g') pn.set_facecolor('b') ax.set_xticks(ind) ax.set_xticklabels(['Memory', 'CPU', 'Bandwidth']) ax.set_ylim([0, 100]) ax.set_ylabel('Percent usage') ax.set_title('System Monitor') start = time.time() for i in range(200): # run for a little while m, c, n = get_stats(i / 10.0) # update the animated artists pm.set_height(m) pc.set_height(c) pn.set_height(n) # ask the canvas to re-draw itself the next time it # has a chance. # For most of the GUI backends this adds an event to the queue # of the GUI frameworks event loop. fig.canvas.draw_idle() try: # make sure that the GUI framework has a chance to run its event loop # and clear any GUI events. This needs to be in a try/except block # because the default implementation of this method is to raise # NotImplementedError fig.canvas.flush_events() except NotImplementedError: pass stop = time.time() print("{fps:.1f} frames per second".format(fps=200 / (stop - start))) **Total running time of the script:** ( 0 minutes 2.678 seconds) .. _sphx_glr_download_gallery_specialty_plots_system_monitor.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: system_monitor.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: system_monitor.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_