Update latency profiler to use (more appropriate) microbenchmarks
diff --git a/tools/profiling/microbenchmark/bm.py b/tools/profiling/microbenchmark/bm.py
new file mode 100755
index 0000000..064bb7a
--- /dev/null
+++ b/tools/profiling/microbenchmark/bm.py
@@ -0,0 +1,109 @@
+#!/usr/bin/env python2.7
+# Copyright 2017, 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.
+
+import multiprocessing
+import os
+import subprocess
+import sys
+
+flamegraph_dir = os.path.join(os.path.expanduser('~'), 'FlameGraph')
+
+def fnize(s):
+ out = ''
+ for c in s:
+ if c in '<>, /':
+ if len(out) and out[-1] == '_': continue
+ out += '_'
+ else:
+ out += c
+ return out
+
+os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '../../..'))
+if not os.path.exists('reports'):
+ os.makedirs('reports')
+
+# index html
+index_html = """
+<html>
+<head>
+<title>Microbenchmark Results</title>
+</head>
+<body>
+"""
+
+def heading(name):
+ global index_html
+ index_html += "<h1>%s</h1>\n" % name
+
+def link(txt, tgt):
+ global index_html
+ index_html += "<p><a href=\"%s\">%s</a></p>\n" % (tgt, txt)
+
+for bm_name in sys.argv[1:]:
+ # generate latency profiles
+ heading('Latency Profiles: %s' % bm_name)
+ subprocess.check_call(
+ ['make', bm_name,
+ 'CONFIG=basicprof', '-j', '%d' % multiprocessing.cpu_count()])
+ for line in subprocess.check_output(['bins/basicprof/%s' % bm_name,
+ '--benchmark_list_tests']).splitlines():
+ link(line, 'reports/%s.txt' % fnize(line))
+ with open('reports/%s.txt' % fnize(line), 'w') as f:
+ f.write(subprocess.check_output(['bins/basicprof/%s' % bm_name,
+ '--benchmark_filter=^%s$' % line]))
+ f.write('\n***********************************************************\n')
+ f.write(subprocess.check_output([
+ sys.executable, 'tools/profiling/latency_profile/profile_analyzer.py',
+ '--source', 'latency_trace.txt', '--fmt', 'simple']))
+
+ # generate flamegraphs
+ heading('Flamegraphs: %s' % bm_name)
+ subprocess.check_call(
+ ['make', bm_name,
+ 'CONFIG=mutrace', '-j', '%d' % multiprocessing.cpu_count()])
+ for line in subprocess.check_output(['bins/mutrace/%s' % bm_name,
+ '--benchmark_list_tests']).splitlines():
+ subprocess.check_call(['sudo', 'perf', 'record', '-g', '-F', '99',
+ 'bins/mutrace/%s' % bm_name,
+ '--benchmark_filter=^%s$' % line,
+ '--benchmark_min_time=20'])
+ with open('/tmp/bm.perf', 'w') as f:
+ f.write(subprocess.check_output(['sudo', 'perf', 'script']))
+ with open('/tmp/bm.folded', 'w') as f:
+ f.write(subprocess.check_output([
+ '%s/stackcollapse-perf.pl' % flamegraph_dir, '/tmp/bm.perf']))
+ link(line, 'reports/%s.svg' % fnize(line))
+ with open('reports/%s.svg' % fnize(line), 'w') as f:
+ f.write(subprocess.check_output([
+ '%s/flamegraph.pl' % flamegraph_dir, '/tmp/bm.folded']))
+
+index_html += "</body>\n</html>\n"
+with open('reports/index.html', 'w') as f:
+ w.write(index_html)