Basic profiler analyzer

tools/profile_analyzer/profile_analyzer.py

+#!/usr/bin/env python
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""
+Read GRPC basic profiles, analyze the data.
+
+Usage:
+  bins/basicprof/qps_smoke_test > log
+  cat log | tools/profile_analyzer/profile_analyzer.py
+"""
+
+
+import collections
+import re
+import sys
+
+# Create a regex to parse output of the C core basic profiler,
+# as defined in src/core/profiling/basic_timers.c.
+_RE_LINE = re.compile(r'GRPC_LAT_PROF ' +
+                      r'([0-9]+\.[0-9]+) 0x([0-9a-f]+) ([{}.]) ([0-9]+) ' +
+                      r'([^ ]+) ([^ ]+) ([0-9]+)')
+
+Entry = collections.namedtuple(
+    'Entry',
+    ['time', 'thread', 'type', 'tag', 'id', 'file', 'line'])
+
+def entries():
+  for line in sys.stdin:
+    m = _RE_LINE.match(line)
+    if not m: continue
+    yield Entry(time=float(m.group(1)),
+                thread=m.group(2),
+                type=m.group(3),
+                tag=int(m.group(4)),
+                id=m.group(5),
+                file=m.group(6),
+                line=m.group(7))
+
+threads = collections.defaultdict(lambda: collections.defaultdict(list))
+times = collections.defaultdict(list)
+
+for entry in entries():
+  thread = threads[entry.thread]
+  if entry.type == '{':
+    thread[entry.tag].append(entry)
+  elif entry.type == '}':
+    last = thread[entry.tag].pop()
+    times[entry.tag].append(entry.time - last.time)
+
+def percentile(vals, pct):
+  return sorted(vals)[int(len(vals) * pct / 100.0)]
+
+print 'tag 50%/90%/95%/99% us'
+for tag in sorted(times.keys()):
+  vals = times[tag]
+  print '%d %.2f/%.2f/%.2f/%.2f' % (tag, 
+                                    percentile(vals, 50),
+                                    percentile(vals, 90),
+                                    percentile(vals, 95),
+                                    percentile(vals, 99))