{"action":"created","comment":{"url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/comments/54659875","id":54659875,"diff_hunk":"@@ -518,6 +592,178 @@ def SingleStreamThroughputBenchmark(storage_schema, host_to_connect=None):\n                   host_to_connect=host_to_connect)\n \n \n+def RunMultiThreadedWorkersWriteResults(worker, worker_args,\n+                                        storage_schema, host_to_connect=None):\n+  \"\"\"Run a worker function in many threads, then gather and print the results.\n+\n+  Args:\n+    worker: either WriteWorker or ReadWorker. The worker function to call.\n+    worker_args: a tuple. The arguments to pass to the worker function. The\n+      result queue and stream number will be appended as the last two arguments.\n+    storage_schema: The schema of the storage provider to use, e.g., \"gs\"\n+    host_to_connect: An optional host endpoint to connect to.\n+\n+  The object size is given by FLAGS.object_size_kb. The number of\n+  objects to transfer (per stream) is given by\n+  FLAGS.objects_per_stream. The benchmark starts at FLAGS.start_time,\n+  if given, or else immediately.\n+\n+  Raises:\n+    LowAvailabilityError: when the storage provider has failed a high number of\n+        our RW requests that exceeds a threshold (>5%), we raise this error\n+        instead of collecting performance numbers from this run.\n+  \"\"\"\n+\n+  result_queue = Queue.Queue()\n+\n+  logging.info('Creating threads')\n+  threads = [threading.Thread(target=worker,\n+                              args=worker_args + (result_queue, i))\n+             for i in xrange(FLAGS.num_streams)]\n+  logging.info('Threads created. Starting threads.')\n+  for thread in threads:\n+    thread.start()\n+  logging.info('Threads started. Joining threads.')\n+  for thread in threads:\n+    thread.join()\n+  logging.info('All threads complete.')\n+\n+  try:\n+    num_results = 0\n+    while True:\n+      res = result_queue.get_nowait()\n+      num_results += 1\n+      stream_num = res['stream_num']\n+      for start_time, latency in zip(res['start_times'], res['latencies']):\n+        json.dump({'kind': res['kind'],\n+                   'start_time': start_time,\n+                   'latency': latency,\n+                   'size': FLAGS.object_size_kb,\n+                   'stream_num': stream_num},\n+                  sys.stdout)\n+        sys.stdout.write('\\n')\n+  except Queue.Empty:\n+    pass\n+\n+  if num_results != FLAGS.num_streams:\n+    raise Exception('Couldn\\'t get results from all streams!')\n+\n+\n+def MultiStreamWrites(storage_schema, host_to_connect=None):\n+  \"\"\"Run multi-stream write threads.\"\"\"\n+  RunMultiThreadedWorkersWriteResults(\n+      WriteWorker,\n+      (storage_schema,\n+       host_to_connect,\n+       FLAGS.object_size_kb,\n+       FLAGS.objects_per_stream,\n+       FLAGS.start_time),\n+      storage_schema,\n+      host_to_connect=host_to_connect)\n+\n+\n+def MultiStreamReads(storage_schema, host_to_connect=None):\n+  \"\"\"Run multi-stream read threads.\"\"\"\n+  RunMultiThreadedWorkersWriteResults(\n+      ReadWorker,\n+      (storage_schema,\n+       host_to_connect,\n+       FLAGS.object_size_kb,\n+       FLAGS.start_time),\n+      storage_schema,\n+      host_to_connect=host_to_connect)\n+\n+\n+def SleepUntilTime(when, too_late=None):\n+  \"\"\"Sleep until a given time.\n+\n+  Args:\n+    when: float. The time to sleep to, as a POSIX timestamp.\n+\n+    too_late: None or Exception. If when is before now + MIN_SLEEP,\n+      raise the given exception. If too_late is None, log a message\n+      but do not raise an exception.\n+  \"\"\"\n+\n+  now = time.time()\n+  sleep_time = when - now\n+  if sleep_time > MIN_SLEEP:\n+    time.sleep(sleep_time)\n+  elif too_late is not None:\n+    raise too_late('Sleep time %s was too small' % sleep_time)\n+  else:\n+    logging.info('Sleep time %s was too small', sleep_time)\n+\n+\n+OBJECTS_WRITTEN_FILE_PREFIX = 'pkb-objects-written-'\n+\n+\n+def WriteWorker(storage_schema, host_to_connect,\n+                object_size_kb, num_objects,\n+                start_time, result_queue, worker_num):\n+  payload_bytes, payload_string = GenerateWritePayload(\n+      object_size_kb * BYTES_PER_KILOBYTE)\n+\n+  objects_written = []\n+  start_times = []\n+  latencies = []\n+\n+  if start_time is not None:\n+    SleepUntilTime(start_time, too_late=Exception)\n+\n+  WriteObjectsFromBuffer(storage_schema, FLAGS.bucket,\n+                         ('pkb_write_worker_%s' % worker_num),\n+                         num_objects, payload_bytes, payload_string,\n+                         object_size_kb * BYTES_PER_KILOBYTE,\n+                         objects_written,\n+                         object_start_times=start_times,\n+                         latency_results=latencies,\n+                         host_to_connect=host_to_connect)\n+\n+  objects_filename = os.path.join(TMP_DIR,\n+                                  OBJECTS_WRITTEN_FILE_PREFIX + str(worker_num))\n+\n+  # Error handling deliberately omitted - abort on any exception.","path":"perfkitbenchmarker/scripts/object_storage_api_tests.py","position":null,"original_position":315,"commit_id":"3eeadee14460adf728efa59a903542f4bf64b1d4","original_commit_id":"b1c3cb1d222fa71971f1ab3036911dfea64a98b9","user":{"login":"noahl","id":16882,"avatar_url":"https://avatars.githubusercontent.com/u/16882?v=3","gravatar_id":"","url":"https://api.github.com/users/noahl","html_url":"https://github.com/noahl","followers_url":"https://api.github.com/users/noahl/followers","following_url":"https://api.github.com/users/noahl/following{/other_user}","gists_url":"https://api.github.com/users/noahl/gists{/gist_id}","starred_url":"https://api.github.com/users/noahl/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/noahl/subscriptions","organizations_url":"https://api.github.com/users/noahl/orgs","repos_url":"https://api.github.com/users/noahl/repos","events_url":"https://api.github.com/users/noahl/events{/privacy}","received_events_url":"https://api.github.com/users/noahl/received_events","type":"User","site_admin":false},"body":"I ended up removing this code.","created_at":"2016-03-02T00:18:22Z","updated_at":"2016-03-02T00:18:22Z","html_url":"https://github.com/GoogleCloudPlatform/PerfKitBenchmarker/pull/840#discussion_r54659875","pull_request_url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/840","_links":{"self":{"href":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/comments/54659875"},"html":{"href":"https://github.com/GoogleCloudPlatform/PerfKitBenchmarker/pull/840#discussion_r54659875"},"pull_request":{"href":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/840"}}},"pull_request":{"url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/840","id":58832092,"html_url":"https://github.com/GoogleCloudPlatform/PerfKitBenchmarker/pull/840","diff_url":"https://github.com/GoogleCloudPlatform/PerfKitBenchmarker/pull/840.diff","patch_url":"https://github.com/GoogleCloudPlatform/PerfKitBenchmarker/pull/840.patch","issue_url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/issues/840","number":840,"state":"open","locked":false,"title":"Add MultiStreamThroughput benchmark to object storage benchmarks","user":{"login":"noahl","id":16882,"avatar_url":"https://avatars.githubusercontent.com/u/16882?v=3","gravatar_id":"","url":"https://api.github.com/users/noahl","html_url":"https://github.com/noahl","followers_url":"https://api.github.com/users/noahl/followers","following_url":"https://api.github.com/users/noahl/following{/other_user}","gists_url":"https://api.github.com/users/noahl/gists{/gist_id}","starred_url":"https://api.github.com/users/noahl/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/noahl/subscriptions","organizations_url":"https://api.github.com/users/noahl/orgs","repos_url":"https://api.github.com/users/noahl/repos","events_url":"https://api.github.com/users/noahl/events{/privacy}","received_events_url":"https://api.github.com/users/noahl/received_events","type":"User","site_admin":false},"body":"Add the MultiStreamThroughput benchmark for object storage\r\nservices. This also requires splitting WriteObjects() in\r\nscripts/object_storage_api_tests.py into two functions that work\r\ntogether.","created_at":"2016-02-10T00:32:34Z","updated_at":"2016-03-02T00:18:22Z","closed_at":null,"merged_at":null,"merge_commit_sha":"2e1bf1c59ed2b4ade9e86cef99508ef2e8f67458","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/840/commits","review_comments_url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/840/comments","review_comment_url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/pulls/comments{/number}","comments_url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/issues/840/comments","statuses_url":"https://api.github.com/repos/GoogleCloudPlatform/PerfKitBenchmarker/statuses/3eeadee14460adf728efa59a903542f4bf64b1d4","head":{"label":"GoogleCloudPlatform:multistream-throughput-v3","ref":"multistream-throughput-v3","sha":"3eeadee14460adf728efa59a903542f4bf64b1d4","user":{"login":"GoogleCloudPlatform","id":2810941,"avatar_url":"https://avatars.githubusercontent.com/u/2810941?v=3","gravatar_id":"","url":"https://api.github.com/users/GoogleCloudPlatform","html_url":"https://github.com/GoogleCloudPlatform","followers_url":"https://api.github.com/users/GoogleCloudPlatform/followers","following_url":"https://api.github.com/users/GoogleCloudPlatform/following{/other_user}","gists_url":"https://api.github.com/users/GoogleCloudPlatform/gists{/gist_id}","starred_url":"https://api.github.com/users/GoogleCloudPlatform/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/GoogleCloudPlatform/subscriptions","organizations_url":"https://api.github.com/users/GoogleCloudPlatform/orgs","repos_url":"https://api.github.com/users/GoogleCloudPlatform/repos","events_url":"https://api.github.com/users/GoogleCloudPlatform/events{/privacy}","received_events_url":"https://api.github.com/users/GoogleCloudPlatform/received_events","type":"Organization","site_admin":false},"repo":{"id":21950910,"name":"PerfKitBenchmarker","full_name":"GoogleCloudPlatform/PerfKitBenchmarker","owner":{"login":"GoogleCloudPlatform","id":2810941,"avatar_url":"https://avatars.githubusercontent.com/u/2810941?v=3","gravatar_id":"","url":"https://api.github.com/users/GoogleCloudPlatform","html_url":"https://github.com/GoogleCloudPlatform","followers_url":"https://api.github.com/users/GoogleCloudPlatform/followers","following_url":"https://api.github.com/users/GoogleCloudPlatform/following{/other_user}","gists_url":"https://api.github.com/users/GoogleCloudPlatform/gists{/gist_id}","starred_url":"https://api.github.com/users/GoogleCloudPlatform/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/GoogleCloudPlatform/subscriptions","organizations_url":"https://api.github.com/users/GoogleCloudPlatform/orgs","repos_url":"https://api.github.com/users/GoogleCloudPlatform/repos","events_url":"https://api.github.com/users/GoogleCloudPlatform/events{/privacy}","received_events_url":"https://api.github.com/users/GoogleCloudPlatform/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/GoogleCloudPlatform/PerfKitBenchmarker","description":"Perfkit Benchmarker contains set of benchmarks to measure and compare cloud offerings. 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