1. jdk 6u4之后可用-XX:+PrintGCDateStamps参数
2.python转换脚本
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#!/usr/bin/env python import
sys, os, datetime # true if string is a positive floatdef validSeconds(str_sec): try: return
0 < float(str_sec) except
ValueError: return
False # show usage if len(sys.argv) < 2: print
"Usage: %s <gc.log>" %
(sys.argv[0]) sys.exit(1) file_str =
sys.argv[1]lastmod_date =
datetime.datetime.fromtimestamp(os.path.getmtime(file_str)) file
= open(file_str, ‘r‘)lines =
file.readlines()file.close() # get last elapsed timefor
line in
reversed(lines): parts =
line.split(‘:‘) if
validSeconds(parts[0]): break # calculate start timestart_date =
lastmod_date -
datetime.timedelta(seconds=float(parts[0])) # print file prepending human readable time where appropiate for
line in
lines: parts =
line.split(‘:‘) if
not validSeconds(parts[0]): print
line.rstrip() continue line_date =
start_date +
datetime.timedelta(seconds=float(parts[0])) print
"%s: %s" % (line_date.isoformat(), line.rstrip()) |
原文：http://www.cnblogs.com/aiguang/p/3564177.html