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Topic: decoding speed test with more than one thread (Read 945 times) previous topic - next topic
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decoding speed test with more than one thread

There's not much documentation on the Decoding Speed Test (foo_benchmark) component, so I can't be sure what the intended behavior is, but I'd guess it isn't this:
System:
  CPU: AMD FX(tm)-8100 Eight-Core Processor, features: MMX SSE SSE2 SSE3 SSE4.1 SSE4.2
  App: foobar2000 v1.3.17
Settings:
  High priority: no
  Buffer entire file into memory: no
  Passes: 1
  Threads: 2
  Postprocessing: none
Stats by codec:
  FLAC: 1006.218x realtime
File: K:\example.flac
  Run 1:
    Decoded length: 1:07:19.253
    Opening time: 0:00.001
    Decoding time: 0:08.028
    Speed (x realtime): 1006.238
  Run 2:
    Decoded length: 1:07:19.253
    Opening time: 0:00.001
    Decoding time: 0:08.028
    Speed (x realtime): 1006.199
  Total:
    Opening time: 0:00.001 min, 0:00.001 max, 0:00.001 average
    Decoding time: 0:08.028 min, 0:08.028 max, 0:08.028 average
    Speed (x realtime): 1006.198 min, 1006.238 max, 503.145 average
Total:
  Decoded length: 2:14:38.507
  Opening time: 0:00.001
  Decoding time: 0:16.056
  Speed (x realtime): 1006.290
That's the full report from a test I just ran.  How can the average speed be less than the minimum speed?