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#!/usr/bin/python
import sys
import time
import argparse
import matplotlib.pyplot as plt
parser = argparse.ArgumentParser()
parser.add_argument('log_file')
parser.add_argument('-q', '--queue', help='plot queue size', action='store_true')
parser.add_argument('-e', '--encoder-threads', help='plot encoder thread activity', action='store_true')
parser.add_argument('-f', '--plot-first-encoder', help='plot more detailed activity of the first encoder thread', action='store_true')
parser.add_argument('--dump-first-encoder', help='dump activity of the first encoder thread', action='store_true')
parser.add_argument('--from', help='time in seconds to start at', type=int, dest='from_time')
parser.add_argument('--to', help='time in seconds to stop at', type=int, dest='to_time')
args = parser.parse_args()
def find_nth(haystack, needle, n):
start = haystack.find(needle)
while start >= 0 and n > 1:
start = haystack.find(needle, start+len(needle))
n -= 1
return start
class Time:
def __init__(self, s, m = 0):
self.seconds = s
self.microseconds = m
def __str__(self):
return '%d:%d' % (self.seconds, self.microseconds)
def float_seconds(self):
return self.seconds + self.microseconds / 1000000.0
def __sub__(self, x):
m = self.microseconds - x.microseconds
if m < 0:
return Time(self.seconds - x.seconds - 1, m + 1000000)
else:
return Time(self.seconds - x.seconds, m)
queue_size = []
encoder_thread_events = dict()
def add_encoder_thread_event(thread, time, event):
global encoder_thread_events
if thread in encoder_thread_events:
encoder_thread_events[thread].append((time, event))
else:
encoder_thread_events[thread] = [(time, event)]
f = open(args.log_file)
start = None
while True:
l = f.readline()
if l == '':
break
l = l.strip()
p = l.split()
if len(p) == 0:
continue
if len(p[0].split(':')) == 2:
# s:us timestamp
x = p[0].split(':')
T = Time(int(x[0]), int(x[1]))
message = l[l.find(' ')+1:]
else:
# Date/time timestamp
s = find_nth(l, ':', 3)
T = Time(time.mktime(time.strptime(l[:s])))
message = l[s+2:]
if start is None:
start = T
else:
T = T - start
thread = None
if message.startswith('['):
thread = message.split()[0][1:-1]
message = message[message.find(' ')+1:]
if message.startswith('adding to queue of '):
queue_size.append((T, int(message.split()[4])))
elif message.startswith('encoder thread sleeps'):
add_encoder_thread_event(thread, T, 'sleep')
elif message.startswith('encoder thread wakes'):
add_encoder_thread_event(thread, T, 'wake')
elif message.startswith('encoder thread begins local encode'):
add_encoder_thread_event(thread, T, 'begin_encode')
elif message.startswith('MagickImageProxy begins read and decode'):
add_encoder_thread_event(thread, T, 'magick_begin_decode')
elif message.startswith('MagickImageProxy completes read and decode'):
add_encoder_thread_event(thread, T, 'magick_end_decode')
elif message.startswith('encoder thread finishes local encode'):
add_encoder_thread_event(thread, T, 'end_encode')
if args.queue:
plt.figure()
x = []
y = []
for q in queue_size:
x.append(q[0].seconds)
y.append(q[1])
plt.plot(x, y)
plt.show()
elif args.encoder_threads:
plt.figure()
N = len(encoder_thread_events)
n = 1
for thread, events in encoder_thread_events.iteritems():
plt.subplot(N, 1, n)
x = []
y = []
previous = 0
for e in events:
if args.from_time is not None and e[0].float_seconds() <= args.from_time:
continue
if args.to_time is not None and e[0].float_seconds() >= args.to_time:
continue
x.append(e[0].float_seconds())
x.append(e[0].float_seconds())
y.append(previous)
if e[1] == 'sleep':
y.append(0)
elif e[1] == 'wake':
y.append(1)
elif e[1] == 'begin_encode':
y.append(2)
elif e[1] == 'end_encode':
y.append(1)
elif e[1] == 'magick_begin_decode':
y.append(3)
elif e[1] == 'magick_end_decode':
y.append(2)
previous = y[-1]
plt.plot(x, y)
n += 1
break
plt.show()
elif args.plot_first_encoder:
plt.figure()
N = len(encoder_thread_events)
n = 1
events = encoder_thread_events.itervalues().next()
N = 6
n = 1
for t in ['sleep', 'wake', 'begin_encode', 'magick_begin_decode', 'magick_end_decode', 'end_encode']:
plt.subplot(N, 1, n)
x = []
y = []
for e in events:
if args.from_time is not None and e[0].float_seconds() <= args.from_time:
continue
if args.to_time is not None and e[0].float_seconds() >= args.to_time:
continue
if e[1] == t:
x.append(e[0].float_seconds())
x.append(e[0].float_seconds())
x.append(e[0].float_seconds())
y.append(0)
y.append(1)
y.append(0)
plt.plot(x, y)
plt.title(t)
n += 1
plt.show()
elif args.dump_first_encoder:
events = encoder_thread_events.itervalues().next()
last = 0
for e in events:
print e[0].float_seconds(), (e[0].float_seconds() - last), e[1]
last = e[0].float_seconds()
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