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man page of gc-analyze

gc-analyze: Analyze Garbage Collector (GC) memory dumps


gc-analyze - Analyze Garbage Collector (GC) memory dumps
gc-analyze [OPTION] ... [file]
gc-analyze prints an analysis of a GC memory dump to standard out. The memory dumps may be created by calling "gnu.gcj.util.GCInfo.enumerate(String namePrefix)" from java code. A memory dump will be created on an out of memory condition if "gnu.gcj.util.GCInfo.setOOMDump(String namePrefix)" is called before the out of memory occurs. Running this program will create two files: TestDump001 and TestDump001.bytes. import gnu.gcj.util.*; import java.util.*; public class GCDumpTest { static public void main(String args[]) { ArrayList<String> l = new ArrayList<String>(1000); for (int i = 1; i < 1500; i++) { l.add("This is string #" + i); } GCInfo.enumerate("TestDump"); } } The memory dump may then be displayed by running: gc-analyze -v TestDump001


--verbose -v Verbose output. -p tool-prefix Prefix added to the names of the nm and readelf commands. -d directory Directory that contains the executable and shared libraries used when the dump was generated. --help Print a help message, then exit. --version Print version information, then exit.



Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, the Front-Cover Texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the man page gfdl(7). (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development. GC-ANALYZE(1)

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