[GitHub] [flink-benchmarks] pnowojski commented on a change in pull request #50: [FLINK-26682] Add regression detection script

[GitBox <gi...@apache.org>]

pnowojski commented on a change in pull request #50:
URL: https://github.com/apache/flink-benchmarks/pull/50#discussion_r829212155



##########
File path: regression_report.py
##########
@@ -0,0 +1,143 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+################################################################################
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+# limitations under the License.
+################################################################################
+
+import datetime
+import urllib
+import urllib2
+import argparse
+import json
+import re
+
+DEFAULT_CODESPEED_URL = 'http://codespeed.dak8s.net:8000/'
+ENVIRONMENT = 2
+
+current_date = datetime.datetime.today()
+
+parser = argparse.ArgumentParser(description='Upload jmh benchmark csv results')
+parser.add_argument('--base-line-size', dest='baseLine', required=False, default=100, type=int,
+                    help='Number of samples taken as the base line.')
+parser.add_argument('--download-samples-size', dest='downloadSamples', required=False, default=200,
+                    type=int,
+                    help='Number of samples download from the codespeed. Not all values are '
+                         'working.')
+parser.add_argument('--recent-trend-size', dest='recentTrend', required=False, default=20, type=int,
+                    help='Recent trend size, that is used to compare against the base line.')
+parser.add_argument('--median-trend-threshold', dest='medianTrendThreshold', required=False,
+                    default=-4, type=float,
+                    help="Tolerated threshold for change between baseline and recent trend median "
+                         "in percentages")
+parser.add_argument('--dev-ratio-threshold', dest='devRatioThreshold', required=False, default=5,
+                    type=float)
+parser.add_argument('--codespeed', dest='codespeed', default=DEFAULT_CODESPEED_URL,
+                    help='codespeed url, default: %s' % DEFAULT_CODESPEED_URL)
+
+"""
+Returns a dict executable id -> revision
+"""
+def loadExecutableAndRevisions(codespeedUrl):
+    revisions = {}
+    url = codespeedUrl + 'reports'
+    f = urllib2.urlopen(url)
+    response = f.read()
+    f.close()
+    for line in response.split('\n'):
+        # Find urls like: /changes/?rev=b8e7fc387dd-ffcdbb4-1647231150&exe=1&env=Hetzner
+        # and extract rev and exe params out of it
+        reports = dict(re.findall(r'([a-z]+)=([a-z0-9\-]+)', line))
+        if "exe" in reports and "rev" in reports:
+            exe = reports["exe"]
+            rev = reports["rev"]
+            # remember only the first (latest) revision for the given executable
+            if exe not in revisions:
+                revisions[exe] = rev
+    return revisions
+
+"""
+Returns a dict executable -> benchmark names 
+"""
+def loadBenchmarkNames(codespeedUrl):
+    execToBenchmarks = {}
+    revisions = loadExecutableAndRevisions(codespeedUrl)
+    # Per each revision/executable ask for benchmark names
+    # http://codespeed.dak8s.net:8000/changes/table/?tre=10&rev=b9593715f35-ffcdbb4-1647399268&exe=1&env=2
+    for exe, rev in revisions.items():
+        url = codespeedUrl + 'changes/table/?' + urllib.urlencode({'tre': '10', 'rev': rev, 'exe': exe, 'env': ENVIRONMENT})
+        f = urllib2.urlopen(url)
+        response = f.read()
+        f.close()
+        benchmarks = []
+        for line in response.split("\n"):
+            # look for lines like and extract benchmark name between characters > and <
+            # <td title="">remoteSortPartition</td>
+            if '<td title="">' in line:
+                benchmark = re.findall(r'\>([^<]+)\<', line)[0]
+                benchmarks.append(benchmark)
+        execToBenchmarks[exe] = benchmarks
+    return execToBenchmarks
+
+"""
+Returns a list of benchmark results
+"""
+def loadData(codespeedUrl, exe, benchmark, downloadSamples):
+    url = codespeedUrl + 'timeline/json/?' + urllib.urlencode({'exe': exe, 'ben': benchmark, 'env': ENVIRONMENT, 'revs': downloadSamples})
+    f = urllib2.urlopen(url)
+    response = f.read()
+    f.close()
+    result = json.loads(response)['timelines'][0]['branches']['master'][exe]
+    return [score for (date, score, deviation, commit, branch) in result]
+
+def getMedian(lst):
+    lst = sorted(lst)  # Sort the list first
+    if len(lst) % 2 == 0:  # Checking if the length is even
+        # Applying formula which is sum of middle two divided by 2
+        return (lst[len(lst) // 2] + lst[(len(lst) - 1) // 2]) / 2
+    else:
+        # If length is odd then get middle value
+        return lst[len(lst) // 2]
+
+def checkBenchmark(args, exe, benchmark):
+    results = loadData(args.codespeed, exe, benchmark, args.downloadSamples)
+
+    urlToBenchmark = args.codespeed + 'timeline/#/?' + urllib.urlencode({
+        'ben': benchmark,
+        'exe': exe,
+        'env': ENVIRONMENT,
+        'revs': args.downloadSamples,
+        'equid': 'off',
+        'quarts': 'on',
+        'extr': 'on'})
+
+    if len(results) < args.baseLine:
+        return
+    median = getMedian(results[args.recentTrend:args.baseLine])
+    recent_median = getMedian(results[:args.recentTrend])
+    median_trend = 0
+    if median != 0:
+        median_trend = recent_median * 100 / median - 100
+    if median_trend < args.medianTrendThreshold:
+        # regression detected, print warning
+        print "<%s|%s> median=%s recent_median=%s" % (urlToBenchmark, benchmark, median, recent_median)

Review comment:
       As described offline. Jenkins is reading stdout from this script and pushing it to our monitoring system.




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