3 # Analyse a DCP-o-matic log file to extract various information.
9 import matplotlib.pyplot as plt
11 parser = argparse.ArgumentParser()
12 parser.add_argument('log_file')
13 parser.add_argument('-q', '--queue', help='plot queue size', action='store_true')
14 parser.add_argument('--encoder-threads', help='plot encoder thread activity', action='store_true')
15 parser.add_argument('-f', '--plot-first-encoder', help='plot more detailed activity of the first encoder thread', action='store_true')
16 parser.add_argument('-s', '--fps-stats', help='frames-per-second stats', action='store_true')
17 parser.add_argument('--encoder-stats', help='encoder thread activity stats', action='store_true')
18 parser.add_argument('--encoder-dump', help='dump activity of the specified encoder', action='store_true')
19 parser.add_argument('-e', '--encoder', help='encoder index (from 0)')
20 parser.add_argument('--from', help='time in seconds to start at', type=int, dest='from_time')
21 parser.add_argument('--to', help='time in seconds to stop at', type=int, dest='to_time')
22 args = parser.parse_args()
24 def find_nth(haystack, needle, n):
25 start = haystack.find(needle)
26 while start >= 0 and n > 1:
27 start = haystack.find(needle, start+len(needle))
31 # Representation of time in seconds and microseconds
33 def __init__(self, s=0, m=0):
38 return '%d:%d' % (self.seconds, self.microseconds)
40 def float_seconds(self):
41 return self.seconds + self.microseconds / 1000000.0
43 def __iadd__(self, x):
44 self.microseconds += x.microseconds
45 self.seconds += x.seconds
46 if self.microseconds >= 1000000:
47 self.microseconds -= 1000000
52 m = self.microseconds - x.microseconds
54 return Time(self.seconds - x.seconds - 1, m + 1000000)
56 return Time(self.seconds - x.seconds, m)
59 def __init__(self, id):
64 def add_event(self, time, message, values):
65 self.events.append((time, message, values))
71 def find_encoder_thread(id):
72 global encoder_threads
74 for t in encoder_threads:
79 thread = EncoderThread(id)
80 encoder_threads.append(thread)
84 def add_general_event(time, event):
86 general_events.append((time, event))
88 f = open(args.log_file)
100 if len(p[0].split(':')) == 2:
101 # s:us timestamp: LOG_TIMING
103 T = Time(int(t[0]), int(t[1]))
107 for i in range(2, len(p)):
111 # Date/time timestamp: other LOG_*
112 s = find_nth(l, ':', 3)
114 T = Time(time.mktime(time.strptime(l[:s])))
117 T = Time(time.mktime(time.strptime(l[:s], "%d.%m.%Y %H:%M:%S")))
120 if not x.endswith('M'):
122 T = Time(time.mktime(time.strptime(x, "%d/%m/%Y %H:%M:%S %p")))
125 # T is elapsed time since the first log message
131 # Not-so-human-readable log messages (LOG_TIMING)
132 if message == 'add-frame-to-queue':
133 queue_size.append((T, values['queue']))
134 elif message in ['encoder-sleep', 'encoder-wake', 'start-local-encode', 'finish-local-encode', 'start-remote-send', 'start-remote-encode', 'start-remote-receive', 'finish-remote-receive']:
135 find_encoder_thread(values['thread']).add_event(T, message, values)
136 # Human-readable log message (other LOG_*)
137 elif message.startswith('Finished locally-encoded'):
138 add_general_event(T, 'end_local_encode')
139 elif message.startswith('Finished remotely-encoded'):
140 add_general_event(T, 'end_remote_encode')
141 elif message.startswith('Transcode job starting'):
142 add_general_event(T, 'begin_transcode')
143 elif message.startswith('Transcode job completed successfully'):
144 add_general_event(T, 'end_transcode')
147 # Plot queue size against time; queue_size contains times and queue sizes
152 x.append(q[0].seconds)
158 elif args.encoder_threads:
159 # Plot the things that are happening in each encoder thread with time
160 # y=0 thread is sleeping
161 # y=1 thread is awake
162 # y=2 thread is encoding
164 N = len(encoder_threads)
166 for thread in encoder_threads:
168 plt.ylim([-0.5, 2.5])
172 for e in thread.events:
173 if args.from_time is not None and e[0].float_seconds() <= args.from_time:
175 if args.to_time is not None and e[0].float_seconds() >= args.to_time:
177 x.append(e[0].float_seconds())
178 x.append(e[0].float_seconds())
180 if e[1] == 'encoder-sleep':
182 elif e[1] == 'encoder-wake':
184 elif e[1] == 'start-local-encode':
186 elif e[1] == 'finish-local-encode':
189 print>>sys.stderr,'unknown event %s' % e[1]
199 elif args.plot_first_encoder:
201 N = len(encoder_threads)
203 events = encoder_threads[0].events
207 for t in ['encoder-sleep', 'encoder-wake', 'start-local-encode', 'finish-local-encode']:
212 if args.from_time is not None and e[0].float_seconds() <= args.from_time:
214 if args.to_time is not None and e[0].float_seconds() >= args.to_time:
217 x.append(e[0].float_seconds())
218 x.append(e[0].float_seconds())
219 x.append(e[0].float_seconds())
230 elif args.encoder_dump:
231 for t in encoder_threads[int(args.encoder)]:
234 print (e[0].float_seconds() - last), e[1]
235 last = e[0].float_seconds()
242 for e in general_events:
243 if e[1] == 'begin_transcode':
245 elif e[1] == 'end_transcode':
247 elif e[1] == 'end_local_encode':
249 elif e[1] == 'end_remote_encode':
253 print 'Job did not appear to end'
256 duration = end - start
258 print 'Job ran for %fs' % duration.float_seconds()
259 print '%d local and %d remote' % (local, remote)
260 print '%.2f fps local and %.2f fps remote' % (local / duration.float_seconds(), remote / duration.float_seconds())
262 elif args.encoder_stats:
263 # Broad stats on what encoder threads spent their time doing
264 for t in encoder_threads:
267 local_encoding = Time()
269 remote_encoding = Time()
274 if last[1] == 'encoder-sleep':
275 asleep += e[0] - last[0]
276 elif last[1] == 'encoder-wake':
278 elif last[1] == 'start-local-encode':
279 local_encoding += e[0] - last[0]
280 elif last[1] == 'start-remote-send':
281 sending += e[0] - last[0]
282 elif last[1] == 'start-remote-encode':
283 remote_encoding += e[0] - last[0]
284 elif last[1] == 'start-remote-receive':
285 receiving += e[0] - last[0]
286 elif last[1] == 'start-encoder-thread':
287 find_encoder_thread(last[2]['thread']).server = last[2]['server']
291 print '-- Encoder thread %s (%s)' % (t.server, t.id)
292 print '\tAwoken %d times' % wakes
294 total = asleep.float_seconds() + local_encoding.float_seconds() + sending.float_seconds() + remote_encoding.float_seconds() + receiving.float_seconds()
298 print '\t%s: %2.f%% %fs' % ('Asleep'.ljust(16), asleep.float_seconds() * 100 / total, asleep.float_seconds())
300 def print_with_fps(v, name, total, frames):
301 if v.float_seconds() > 1:
302 print '\t%s: %2.f%% %f %.2ffps' % (name.ljust(16), v.float_seconds() * 100 / total, v.float_seconds(), frames / v.float_seconds())
304 print_with_fps(local_encoding, 'Local encoding', total, wakes)
305 if sending.float_seconds() > 0:
306 print '\t%s: %2.f%%' % ('Sending'.ljust(16), sending.float_seconds() * 100 / total)
307 print_with_fps(remote_encoding, 'Remote encoding', total, wakes)
308 if receiving.float_seconds() > 0:
309 print '\t%s: %2.f%%' % ('Receiving'.ljust(16), receiving.float_seconds() * 100 / total)