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('-e', '--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('--dump-first-encoder', help='dump activity of the first encoder thread', action='store_true')
19 parser.add_argument('--from', help='time in seconds to start at', type=int, dest='from_time')
20 parser.add_argument('--to', help='time in seconds to stop at', type=int, dest='to_time')
21 args = parser.parse_args()
23 def find_nth(haystack, needle, n):
24 start = haystack.find(needle)
25 while start >= 0 and n > 1:
26 start = haystack.find(needle, start+len(needle))
30 # Representation of time in seconds and microseconds
32 def __init__(self, s = 0, m = 0):
37 return '%d:%d' % (self.seconds, self.microseconds)
39 def float_seconds(self):
40 return self.seconds + self.microseconds / 1000000.0
42 def __iadd__(self, x):
43 self.microseconds += x.microseconds
44 self.seconds += x.seconds
45 if self.microseconds >= 1000000:
46 self.microseconds -= 1000000
51 m = self.microseconds - x.microseconds
53 return Time(self.seconds - x.seconds - 1, m + 1000000)
55 return Time(self.seconds - x.seconds, m)
58 def __init__(self, id):
63 def add_event(self, time, message, values):
64 self.events.append((time, message, values))
70 def find_encoder_thread(id):
71 global encoder_threads
73 for t in encoder_threads:
78 thread = EncoderThread(id)
79 encoder_threads.append(thread)
83 def add_general_event(time, event):
85 general_events.append((time, event))
87 f = open(args.log_file)
99 if len(p[0].split(':')) == 2:
100 # s:us timestamp: LOG_TIMING
102 T = Time(int(t[0]), int(t[1]))
106 for i in range(2, len(p)):
110 # Date/time timestamp: other LOG_*
111 s = find_nth(l, ':', 3)
112 T = Time(time.mktime(time.strptime(l[:s])))
115 # T is elapsed time since the first log message
121 # Not-so-human-readable log messages (LOG_TIMING)
122 if message == 'add-frame-to-queue':
123 queue_size.append((T, values['queue']))
124 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', 'start-encoder-thread']:
125 find_encoder_thread(values['thread']).add_event(T, message, values)
126 # Human-readable log message (other LOG_*)
127 elif message.startswith('Finished locally-encoded'):
128 add_general_event(T, 'end_local_encode')
129 elif message.startswith('Finished remotely-encoded'):
130 add_general_event(T, 'end_remote_encode')
131 elif message.startswith('Transcode job starting'):
132 add_general_event(T, 'begin_transcode')
133 elif message.startswith('Transcode job completed successfully'):
134 add_general_event(T, 'end_transcode')
137 # Plot queue size against time; queue_size contains times and queue sizes
142 x.append(q[0].seconds)
148 elif args.encoder_threads:
149 # Plot the things that are happening in each encoder thread with time
150 # y=0 thread is sleeping
151 # y=1 thread is awake
152 # y=2 thread is encoding
154 N = len(encoder_thread_events)
156 for thread in encoder_threads:
161 for e in thread.events:
162 if args.from_time is not None and e[0].float_seconds() <= args.from_time:
164 if args.to_time is not None and e[0].float_seconds() >= args.to_time:
166 x.append(e[0].float_seconds())
167 x.append(e[0].float_seconds())
173 elif e[1] == 'begin_encode':
175 elif e[1] == 'end_encode':
185 elif args.plot_first_encoder:
187 N = len(encoder_threads)
189 events = encoder_threads[0].events
193 for t in ['sleep', 'wake', 'begin_encode', 'end_encode']:
198 if args.from_time is not None and e[0].float_seconds() <= args.from_time:
200 if args.to_time is not None and e[0].float_seconds() >= args.to_time:
203 x.append(e[0].float_seconds())
204 x.append(e[0].float_seconds())
205 x.append(e[0].float_seconds())
216 elif args.dump_first_encoder:
217 events = encoder_thread_events.itervalues().next()
220 print e[0].float_seconds(), (e[0].float_seconds() - last), e[1]
221 last = e[0].float_seconds()
228 for e in general_events:
229 if e[1] == 'begin_transcode':
231 elif e[1] == 'end_transcode':
233 elif e[1] == 'end_local_encode':
235 elif e[1] == 'end_remote_encode':
239 print 'Job did not appear to end'
242 duration = end - start
244 print 'Job ran for %fs' % duration.float_seconds()
245 print '%d local and %d remote' % (local, remote)
246 print '%.2f fps local and %.2f fps remote' % (local / duration.float_seconds(), remote / duration.float_seconds())
248 elif args.encoder_stats:
249 # Broad stats on what encoder threads spent their time doing
250 for t in encoder_threads:
253 local_encoding = Time()
255 remote_encoding = Time()
260 if last[1] == 'encoder-sleep':
261 asleep += e[0] - last[0]
262 elif last[1] == 'encoder-wake':
264 elif last[1] == 'start-local-encode':
265 local_encoding += e[0] - last[0]
266 elif last[1] == 'start-remote-send':
267 sending += e[0] - last[0]
268 elif last[1] == 'start-remote-encode':
269 remote_encoding += e[0] - last[0]
270 elif last[1] == 'start-remote-receive':
271 receiving += e[0] - last[0]
272 elif last[1] == 'start-encoder-thread':
273 find_encoder_thread(last[2]['thread']).server = last[2]['server']
277 print '-- Encoder thread %s (%s)' % (t.server, t.id)
278 print '\tAwoken %d times' % wakes
280 total = asleep.float_seconds() + local_encoding.float_seconds() + sending.float_seconds() + remote_encoding.float_seconds() + receiving.float_seconds()
284 print '\t%s: %2.f%%' % ('Asleep'.ljust(16), asleep.float_seconds() * 100 / total)
286 def print_with_fps(v, name, total, frames):
287 if v.float_seconds() > 1:
288 print '\t%s: %2.f%% %.2ffps' % (name.ljust(16), v.float_seconds() * 100 / total, frames / v.float_seconds())
290 print_with_fps(local_encoding, 'Local encoding', total, wakes)
291 if sending.float_seconds() > 0:
292 print '\t%s: %2.f%%' % ('Sending'.ljust(16), sending.float_seconds() * 100 / total)
293 print_with_fps(remote_encoding, 'Remote encoding', total, wakes)
294 if receiving.float_seconds() > 0:
295 print '\t%s: %2.f%%' % ('Receiving'.ljust(16), receiving.float_seconds() * 100 / total)