Reviewers: Mads Ager, Description: 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). Please review this at http://codereview.chromium.org/149611 Affected files: M src/log.cc A tools/process-heap-prof.py Index: src/log.cc diff --git a/src/log.cc b/src/log.cc index 2ca89dd468060990aaeffa339d18af8b06932c32..16f3fb5bf81044be2147322d2442fd90291be6cf 100644 --- a/src/log.cc +++ b/src/log.cc @@ -843,7 +843,12 @@ void Logger::HeapSampleBeginEvent(const char* space, const char* kind) { #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 } Index: tools/process-heap-prof.py diff --git a/tools/process-heap-prof.py b/tools/process-heap-prof.py new file mode 100755 index 0000000000000000000000000000000000000000..79c49f83d8ca300d2aa3f2f16ac5ff7cc0b05e2b --- /dev/null +++ b/tools/process-heap-prof.py @@ -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]) --~--~---------~--~----~------------~-------~--~----~ v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev -~----------~----~----~----~------~----~------~--~---
