Author: [email protected]
Date: Wed Jul 15 00:09:48 2009
New Revision: 2461
Added:
branches/bleeding_edge/tools/process-heap-prof.py (contents, props
changed)
Modified:
branches/bleeding_edge/src/log.cc
Log:
Add heap log processing script originally written by Kevin.
Also, add user time into heap sample begin events to make '--log-gc' flag
alone sufficient for producing heap logs (previously, samples times were
extracted from scavenge events which are only logged with '--log' flag).
Review URL: http://codereview.chromium.org/149611
Modified: branches/bleeding_edge/src/log.cc
==============================================================================
--- branches/bleeding_edge/src/log.cc (original)
+++ branches/bleeding_edge/src/log.cc Wed Jul 15 00:09:48 2009
@@ -843,7 +843,12 @@
#ifdef ENABLE_LOGGING_AND_PROFILING
if (!Log::IsEnabled() || !FLAG_log_gc) return;
LogMessageBuilder msg;
- msg.Append("heap-sample-begin,\"%s\",\"%s\"\n", space, kind);
+ msg.Append("heap-sample-begin,\"%s\",\"%s\"", space, kind);
+ uint32_t sec, usec;
+ if (OS::GetUserTime(&sec, &usec) != -1) {
+ msg.Append(",%d,%d", sec, usec);
+ }
+ msg.Append('\n');
msg.WriteToLogFile();
#endif
}
Added: branches/bleeding_edge/tools/process-heap-prof.py
==============================================================================
--- (empty file)
+++ branches/bleeding_edge/tools/process-heap-prof.py Wed Jul 15 00:09:48
2009
@@ -0,0 +1,69 @@
+#!/usr/bin/env python
+#
+# Copyright 2009 the V8 project authors. 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.
+
+# This is an utility for converting V8 heap logs into .hp files that can
+# be further processed using 'hp2ps' tool (bundled with GHC and Valgrind)
+# to produce heap usage histograms.
+
+# Sample usage:
+# $ ./shell --log-gc script.js
+# $ tools/process-heap-prof.py v8.log | hp2ps -c > script-heap-graph.ps
+# ('-c' enables color, see hp2ps manual page for more options)
+
+import csv, sys, time
+
+def process_logfile(filename):
+ sample_time = 0.0
+ sampling = False
+ try:
+ logfile = open(filename, 'rb')
+ try:
+ logreader = csv.reader(logfile)
+
+ print('JOB "v8"')
+ print('DATE "%s"' % time.asctime(time.localtime()))
+ print('SAMPLE_UNIT "seconds"')
+ print('VALUE_UNIT "bytes"')
+
+ for row in logreader:
+ if row[0] == 'heap-sample-begin' and row[1] == 'Heap':
+ sample_time = float(row[3]) + float(row[4])/1000000.0
+ print('BEGIN_SAMPLE %.2f' % sample_time)
+ sampling = True
+ elif row[0] == 'heap-sample-end' and row[1] == 'Heap':
+ print('END_SAMPLE %.2f' % sample_time)
+ sampling = False
+ elif row[0] == 'heap-sample-item' and sampling:
+ print('%s %d' % (row[1], int(row[3])))
+ finally:
+ logfile.close()
+ except:
+ sys.exit('can\'t open %s' % filename)
+
+process_logfile(sys.argv[1])
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