moved lbry up one level
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Lex Berezhny
parent
431499f43f
commit
2968f74c6c
316 changed files with 0 additions and 56 deletions
scripts
174
scripts/time_to_first_byte.py
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174
scripts/time_to_first_byte.py
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import os
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import sys
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import json
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import argparse
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import asyncio
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import time
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import aiohttp
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from aiohttp import ClientConnectorError
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from lbry import __version__
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from lbry.blob.blob_file import MAX_BLOB_SIZE
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from lbry.conf import Config
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from lbry.extras.daemon.client import daemon_rpc
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from lbry.extras import system_info
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async def report_to_slack(output, webhook):
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payload = {
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"text": f"lbrynet {__version__} ({system_info.get_platform()['platform']}) time to first byte:\n{output}"
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}
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async with aiohttp.request('post', webhook, data=json.dumps(payload)):
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pass
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def confidence(times, z, plus_err=True):
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mean = sum(times) / len(times)
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standard_dev = (sum((t - sum(times) / len(times)) ** 2.0 for t in times) / len(times)) ** 0.5
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err = (z * standard_dev) / (len(times) ** 0.5)
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return f"{round((mean + err) if plus_err else (mean - err), 3)}"
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def variance(times):
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mean = sum(times) / len(times)
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return round(sum((i - mean) ** 2.0 for i in times) / (len(times) - 1), 3)
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async def wait_for_done(conf, claim_name, timeout):
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blobs_completed, last_completed = 0, time.perf_counter()
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while True:
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file = (await daemon_rpc(conf, "file_list", claim_name=claim_name))['items'][0]
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if file['status'] in ['finished', 'stopped']:
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return True, file['blobs_completed'], file['blobs_in_stream']
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elif blobs_completed < int(file['blobs_completed']):
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blobs_completed, last_completed = int(file['blobs_completed']), time.perf_counter()
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elif (time.perf_counter() - last_completed) > timeout:
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return False, file['blobs_completed'], file['blobs_in_stream']
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await asyncio.sleep(1.0)
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async def main(cmd_args=None):
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print('Time to first byte started using parameters:')
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for key, value in vars(cmd_args).items():
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print(f"{key}: {value}")
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conf = Config()
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url_to_claim = {}
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try:
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for page in range(1, cmd_args.download_pages + 1):
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start = time.perf_counter()
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kwargs = {
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'page': page,
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'claim_type': 'stream',
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'any_tags': [
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'art',
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'automotive',
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'blockchain',
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'comedy',
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'economics',
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'education',
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'gaming',
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'music',
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'news',
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'science',
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'sports',
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'technology',
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],
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'order_by': ['trending_global', 'trending_mixed'],
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'no_totals': True
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}
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if not cmd_args.allow_fees:
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kwargs['fee_amount'] = 0
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response = await daemon_rpc(
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conf, 'claim_search', **kwargs
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)
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if 'error' in response or not response.get('items'):
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print(f'Error getting claim list page {page}:')
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print(response)
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return 1
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else:
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url_to_claim.update({
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claim['permanent_url']: claim for claim in response['items'] if claim['value_type'] == 'stream'
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})
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print(f'Claim search page {page} took: {time.perf_counter() - start}')
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except (ClientConnectorError, ConnectionError):
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print("Could not connect to daemon")
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return 1
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print("**********************************************")
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print(f"Attempting to download {len(url_to_claim)} claim_search streams")
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first_byte_times = []
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download_speeds = []
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download_successes = []
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failed_to = {}
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await asyncio.gather(*(
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daemon_rpc(conf, 'file_delete', delete_from_download_dir=True, claim_name=claim['name'])
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for claim in url_to_claim.values() if not cmd_args.keep_files
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))
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for i, (url, claim) in enumerate(url_to_claim.items()):
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start = time.perf_counter()
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response = await daemon_rpc(conf, 'get', uri=url, save_file=not cmd_args.head_blob_only)
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if 'error' in response:
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print(f"{i + 1}/{len(url_to_claim)} - failed to start {url}: {response['error']}")
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failed_to[url] = 'start'
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if cmd_args.exit_on_error:
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return
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continue
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first_byte = time.perf_counter()
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first_byte_times.append(first_byte - start)
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print(f"{i + 1}/{len(url_to_claim)} - {first_byte - start} {url}")
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if not cmd_args.head_blob_only:
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downloaded, amount_downloaded, blobs_in_stream = await wait_for_done(
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conf, claim['name'], cmd_args.stall_download_timeout
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)
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if downloaded:
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download_successes.append(url)
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else:
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failed_to[url] = 'finish'
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mbs = round((blobs_in_stream * (MAX_BLOB_SIZE - 1)) / (time.perf_counter() - start) / 1000000, 2)
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download_speeds.append(mbs)
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print(f"downloaded {amount_downloaded}/{blobs_in_stream} blobs for {url} at "
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f"{mbs}mb/s")
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if not cmd_args.keep_files:
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await daemon_rpc(conf, 'file_delete', delete_from_download_dir=True, claim_name=claim['name'])
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await asyncio.sleep(0.1)
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print("**********************************************")
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result = f"Started {len(first_byte_times)} of {len(url_to_claim)} attempted front page streams\n"
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if first_byte_times:
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result += f"Worst first byte time: {round(max(first_byte_times), 2)}\n" \
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f"Best first byte time: {round(min(first_byte_times), 2)}\n" \
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f"*95% confidence time-to-first-byte: {confidence(first_byte_times, 1.984)}s*\n" \
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f"99% confidence time-to-first-byte: {confidence(first_byte_times, 2.626)}s\n" \
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f"Variance: {variance(first_byte_times)}\n"
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if download_successes:
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result += f"Downloaded {len(download_successes)}/{len(url_to_claim)}\n" \
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f"Best stream download speed: {round(max(download_speeds), 2)}mb/s\n" \
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f"Worst stream download speed: {round(min(download_speeds), 2)}mb/s\n" \
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f"95% confidence download speed: {confidence(download_speeds, 1.984, False)}mb/s\n" \
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f"99% confidence download speed: {confidence(download_speeds, 2.626, False)}mb/s\n"
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for reason in ('start', 'finish'):
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failures = [url for url, why in failed_to.items() if reason == why]
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if failures:
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result += f"\nFailed to {reason}:\n" + "\n•".join(failures)
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print(result)
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webhook = os.environ.get('TTFB_SLACK_TOKEN', None)
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if webhook:
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await report_to_slack(result, webhook)
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return 0
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument("--allow_fees", action='store_true')
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parser.add_argument("--exit_on_error", action='store_true')
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parser.add_argument("--stall_download_timeout", default=5, type=int)
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parser.add_argument("--keep_files", action='store_true')
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parser.add_argument("--head_blob_only", action='store_true')
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parser.add_argument("--download_pages", type=int, default=10)
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sys.exit(asyncio.run(main(cmd_args=parser.parse_args())) or 0)
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