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update ttfb script

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This commit is contained in:
Victor Shyba 2019-02-20 17:10:36 -03:00
parent 59325ad8c1
commit d7ba90bbea
1 changed files with 9 additions and 10 deletions
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19
scripts/time_to_first_byte.py
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@ -46,11 +46,11 @@ async def report_to_slack(output, webhook):
pass pass
def confidence(times, z): def confidence(times, z, plus_err=True):
mean = sum(times) / len(times) mean = sum(times) / len(times)
standard_dev = (sum(((t - sum(times) / len(times)) ** 2.0 for t in times)) / len(times)) ** 0.5 standard_dev = (sum(((t - sum(times) / len(times)) ** 2.0 for t in times)) / len(times)) ** 0.5
err = (z * standard_dev) / (len(times) ** 0.5) err = (z * standard_dev) / (len(times) ** 0.5)
return f"{round(mean + err, 3)}s" return f"{round((mean + err) if plus_err else (mean - err), 3)}"
def variance(times): def variance(times):
@ -134,18 +134,17 @@ async def main(uris=None, allow_fees=False):
await asyncio.sleep(0.1) await asyncio.sleep(0.1)
print("**********************************************") print("**********************************************")
result = f"Tried to start downloading {len(resolvable)} streams from the front page\n" \ result = f"Started {len(first_byte_times)} of {len(resolvable)} attempted front page streams\n" \
f"Worst first byte time: {round(max(first_byte_times), 2)}\n" \ f"Worst first byte time: {round(max(first_byte_times), 2)}\n" \
f"Best first byte time: {round(min(first_byte_times), 2)}\n" \ f"Best first byte time: {round(min(first_byte_times), 2)}\n" \
f"95% confidence time-to-first-byte: {confidence(first_byte_times, 1.984)}\n" \ f"95% confidence time-to-first-byte: {confidence(first_byte_times, 1.984)}s\n" \
f"99% confidence time-to-first-byte: {confidence(first_byte_times, 2.626)}" \ f"99% confidence time-to-first-byte: {confidence(first_byte_times, 2.626)}s\n" \
f"Variance: {variance(first_byte_times)}\n" \ f"Variance: {variance(first_byte_times)}\n" \
f"Started {len(first_byte_times)}/{len(resolvable)} streams\n" \
f"Downloaded {len(download_successes)}/{len(resolvable)}\n" \ f"Downloaded {len(download_successes)}/{len(resolvable)}\n" \
f"Best stream download speed: {round(max(download_speeds), 2)}\n" \ f"Best stream download speed: {round(max(download_speeds), 2)}mb/s\n" \
f"Worst stream download speed: {round(min(download_speeds), 2)}\n" \ f"Worst stream download speed: {round(min(download_speeds), 2)}mb/s\n" \
f"95% confidence download speed: {confidence(download_speeds, 1.984)}\n" \ f"95% confidence download speed: {confidence(download_speeds, 1.984, False)}mb/s\n" \
f"99% confidence download speed: {confidence(download_speeds, 2.626)}\n" f"99% confidence download speed: {confidence(download_speeds, 2.626, False)}mb/s\n"
if failed_to_start: if failed_to_start:
result += "\nFailed to start:" + "\n".join([f for f in failed_to_start]) result += "\nFailed to start:" + "\n".join([f for f in failed_to_start])