• file
• revisions
• annotate
• diff
• comparison
• raw

test/gc/g1/TestGCLogMessages.java@96b1c2e06e25 (annotated)

test/gc/g1/TestGCLogMessages.java

Mon, 24 Mar 2014 15:30:36 +0100

author

tschatzl

date

Mon, 24 Mar 2014 15:30:36 +0100

changeset 6404

96b1c2e06e25

parent 6402

191174b49bec

child 6405

a07bea31ef35

permissions

-rw-r--r--

8027295: Free CSet takes ~50% of young pause time
Summary: Improve fast card cache iteration and avoid taking locks when freeing the collection set.
Reviewed-by: brutisso

tschatzl@6402	1	/*
tschatzl@6402	2	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
tschatzl@6402	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
tschatzl@6402	4	*
tschatzl@6402	5	* This code is free software; you can redistribute it and/or modify it
tschatzl@6402	6	* under the terms of the GNU General Public License version 2 only, as
tschatzl@6402	7	* published by the Free Software Foundation.
tschatzl@6402	8	*
tschatzl@6402	9	* This code is distributed in the hope that it will be useful, but WITHOUT
tschatzl@6402	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
tschatzl@6402	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
tschatzl@6402	12	* version 2 for more details (a copy is included in the LICENSE file that
tschatzl@6402	13	* accompanied this code).
tschatzl@6402	14	*
tschatzl@6402	15	* You should have received a copy of the GNU General Public License version
tschatzl@6402	16	* 2 along with this work; if not, write to the Free Software Foundation,
tschatzl@6402	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
tschatzl@6402	18	*
tschatzl@6402	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
tschatzl@6402	20	* or visit www.oracle.com if you need additional information or have any
tschatzl@6402	21	* questions.
tschatzl@6402	22	*/
tschatzl@6402	23
tschatzl@6402	24	/*
tschatzl@6402	25	* @test TestPrintGCDetails
tschatzl@6404	26	* @bug 8035406 8027295
tschatzl@6402	27	* @summary Ensure that the PrintGCDetails output for a minor GC with G1
tschatzl@6402	28	* includes the expected necessary messages.
tschatzl@6402	29	* @key gc
tschatzl@6402	30	* @library /testlibrary
tschatzl@6402	31	*/
tschatzl@6402	32
tschatzl@6402	33	import com.oracle.java.testlibrary.ProcessTools;
tschatzl@6402	34	import com.oracle.java.testlibrary.OutputAnalyzer;
tschatzl@6402	35
tschatzl@6402	36	public class TestGCLogMessages {
tschatzl@6402	37	public static void main(String[] args) throws Exception {
tschatzl@6402	38
tschatzl@6402	39	ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
tschatzl@6402	40	"-Xmx10M",
tschatzl@6402	41	GCTest.class.getName());
tschatzl@6402	42
tschatzl@6402	43	OutputAnalyzer output = new OutputAnalyzer(pb.start());
tschatzl@6402	44
tschatzl@6404	45	output.shouldNotContain("[Code Root Purge");
tschatzl@6404	46	output.shouldNotContain("[Young Free CSet");
tschatzl@6404	47	output.shouldNotContain("[Non-Young Free CSet");
tschatzl@6404	48	output.shouldHaveExitValue(0);
tschatzl@6404	49
tschatzl@6404	50	pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
tschatzl@6404	51	"-Xmx10M",
tschatzl@6404	52	"-XX:+PrintGCDetails",
tschatzl@6404	53	GCTest.class.getName());
tschatzl@6404	54
tschatzl@6404	55	output = new OutputAnalyzer(pb.start());
tschatzl@6404	56
tschatzl@6402	57	output.shouldContain("[Code Root Purge");
tschatzl@6404	58	output.shouldNotContain("[Young Free CSet");
tschatzl@6404	59	output.shouldNotContain("[Non-Young Free CSet");
tschatzl@6402	60	output.shouldHaveExitValue(0);
tschatzl@6404	61
tschatzl@6404	62	pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
tschatzl@6404	63	"-Xmx10M",
tschatzl@6404	64	"-XX:+PrintGCDetails",
tschatzl@6404	65	"-XX:+UnlockExperimentalVMOptions",
tschatzl@6404	66	"-XX:G1LogLevel=finest",
tschatzl@6404	67	GCTest.class.getName());
tschatzl@6404	68
tschatzl@6404	69	output = new OutputAnalyzer(pb.start());
tschatzl@6404	70
tschatzl@6404	71	output.shouldContain("[Code Root Purge");
tschatzl@6404	72	output.shouldContain("[Young Free CSet");
tschatzl@6404	73	output.shouldContain("[Non-Young Free CSet");
tschatzl@6404	74	output.shouldHaveExitValue(0);
tschatzl@6404	75
tschatzl@6402	76	}
tschatzl@6402	77
tschatzl@6402	78	static class GCTest {
tschatzl@6402	79	private static byte[] garbage;
tschatzl@6402	80	public static void main(String [] args) {
tschatzl@6402	81	System.out.println("Creating garbage");
tschatzl@6402	82	// create 128MB of garbage. This should result in at least one GC
tschatzl@6402	83	for (int i = 0; i < 1024; i++) {
tschatzl@6402	84	garbage = new byte[128 * 1024];
tschatzl@6402	85	}
tschatzl@6402	86	System.out.println("Done");
tschatzl@6402	87	}
tschatzl@6402	88	}
tschatzl@6402	89	}