gevent_jitter_test

In [69]:

    

import gevent


    

In [70]:

    

import time
import numpy as np


    

In [71]:

    

supertime=np.zeros(shape=[100,1000], dtype=float32)


    

In [72]:

    

def time_test(times):
    last_time=time.time()
    for i in range(supertime.shape[1]):
        now=time.time()
        times[i]=now-last_time
        last_time=now
        gevent.sleep(.005)


    

In [74]:

    

threads=[]
for i in range(supertime.shape[0]):
    threads.append(gevent.spawn(time_test, supertime[i]))


    

In [75]:

    

for thread in threads:
    thread.start()


    

In [76]:

    

gevent.joinall(threads)


    

In [16]:

    

%matplotlib inline


    

In [22]:

    

rcParams['font.family']= 'serif'
# rcParams['font.weight']= 'bold'
rcParams['font.serif']= 'cmr10'
rcParams['font.size']= 22
rcParams['text.usetex'] = False
rcParams['figure.figsize'] = 10, 8
rcParams['figure.subplot.left'] = 0.08 
rcParams['figure.subplot.right'] = 0.92 
rcParams['figure.subplot.bottom'] = 0.08 
rcParams['figure.subplot.top'] = 0.92 
rcParams['figure.subplot.wspace'] = 0.25 
rcParams['figure.subplot.hspace'] = 0.25 
rcParams['savefig.dpi'] = 300 
rcParams['ps.fonttype'] = 42 
rcParams['pdf.fonttype'] = 42


    

In [23]:

    

import matplotlib.pyplot as plt


    

In [86]:

    

plt.imshow(supertime, interpolation='nearest', aspect='auto')
plt.colorbar()
plt.title('Jitter from 100 gevent threads running at 100hz')
plt.xlabel('Time(ms)')
plt.ylabel('Thread Id')
plt.clim(0, .02)


    

In [87]:

    

for i in range(supertime.shape[0]):
    plt.plot(supertime[i])
plt.title('Jitter from 100 gevent threads running at 100hz')
plt.xlabel('Time(ms)')
plt.ylabel('Period(s)')
pylab.ylim([0,.02])


    

    
Out[87]:





(0, 0.02)






    

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