19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.util.List;
25 import java.lang.management.*;
26
27 import jdk.test.lib.*;
28 import static jdk.test.lib.Asserts.*;
29
30 /* @test TestPerfCountersAndMemoryPools
31 * @bug 8023476
32 * @library /testlibrary
33 * @requires vm.gc=="Serial" | vm.gc=="null"
34 * @summary Tests that a MemoryPoolMXBeans and PerfCounters for metaspace
35 * report the same data.
36 * @modules java.base/sun.misc
37 * java.management
38 * jdk.jvmstat/sun.jvmstat.monitor
39 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedKlassPointers -XX:+UseSerialGC -XX:+UsePerfData -Xint TestPerfCountersAndMemoryPools
40 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -XX:+UseSerialGC -XX:+UsePerfData -Xint TestPerfCountersAndMemoryPools
41 */
42 public class TestPerfCountersAndMemoryPools {
43 public static void main(String[] args) throws Exception {
44 checkMemoryUsage("Metaspace", "sun.gc.metaspace");
45
46 if (InputArguments.contains("-XX:+UseCompressedKlassPointers") && Platform.is64bit()) {
47 checkMemoryUsage("Compressed Class Space", "sun.gc.compressedclassspace");
48 }
49 }
50
51 private static MemoryPoolMXBean getMemoryPool(String memoryPoolName) {
52 List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
53 for (MemoryPoolMXBean pool : pools) {
54 if (pool.getName().equals(memoryPoolName)) {
55 return pool;
56 }
57 }
58
59 throw new RuntimeException("Excpted to find a memory pool with name " +
60 memoryPoolName);
61 }
62
63 private static void checkMemoryUsage(String memoryPoolName, String perfNS)
64 throws Exception {
65 MemoryPoolMXBean pool = getMemoryPool(memoryPoolName);
66
67 // First, call all the methods to let them allocate their own slab of metadata
68 getMinCapacity(perfNS);
69 getCapacity(perfNS);
70 getUsed(perfNS);
71 pool.getUsage().getInit();
72 pool.getUsage().getUsed();
73 pool.getUsage().getCommitted();
74 assertEQ(1L, 1L);
75
76 // Must do a GC to update performance counters
77 System.gc();
78 assertEQ(getMinCapacity(perfNS), pool.getUsage().getInit());
79 assertEQ(getUsed(perfNS), pool.getUsage().getUsed());
80 assertEQ(getCapacity(perfNS), pool.getUsage().getCommitted());
81 }
82
83 private static long getMinCapacity(String ns) throws Exception {
84 return PerfCounters.findByName(ns + ".minCapacity").longValue();
85 }
86
87 private static long getCapacity(String ns) throws Exception {
88 return PerfCounters.findByName(ns + ".capacity").longValue();
89 }
90
91 private static long getUsed(String ns) throws Exception {
92 return PerfCounters.findByName(ns + ".used").longValue();
93 }
94 }
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.util.List;
25 import java.lang.management.*;
26
27 import jdk.test.lib.*;
28 import static jdk.test.lib.Asserts.*;
29
30 /* @test TestPerfCountersAndMemoryPools
31 * @bug 8023476
32 * @library /testlibrary
33 * @requires vm.gc=="Serial" | vm.gc=="null"
34 * @summary Tests that a MemoryPoolMXBeans and PerfCounters for metaspace
35 * report the same data.
36 * @modules java.base/sun.misc
37 * java.management
38 * jdk.jvmstat/sun.jvmstat.monitor
39 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UseSerialGC -XX:+UsePerfData -Xint TestPerfCountersAndMemoryPools
40 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UseSerialGC -XX:+UsePerfData -Xint TestPerfCountersAndMemoryPools
41 */
42 public class TestPerfCountersAndMemoryPools {
43 public static void main(String[] args) throws Exception {
44 checkMemoryUsage("Metaspace", "sun.gc.metaspace");
45
46 if (InputArguments.contains("-XX:+UseCompressedClassPointers") && Platform.is64bit()) {
47 checkMemoryUsage("Compressed Class Space", "sun.gc.compressedclassspace");
48 }
49 }
50
51 private static MemoryPoolMXBean getMemoryPool(String memoryPoolName) {
52 List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
53 for (MemoryPoolMXBean pool : pools) {
54 if (pool.getName().equals(memoryPoolName)) {
55 return pool;
56 }
57 }
58
59 throw new RuntimeException("Excpted to find a memory pool with name " +
60 memoryPoolName);
61 }
62
63 private static void checkMemoryUsage(String memoryPoolName, String perfNS)
64 throws Exception {
65 MemoryPoolMXBean pool = getMemoryPool(memoryPoolName);
66
67 // First, call all the methods to let them allocate their own slab of metadata
68 getMinCapacity(perfNS);
69 getCapacity(perfNS);
70 getUsed(perfNS);
71 pool.getUsage().getInit();
72 pool.getUsage().getUsed();
73 pool.getUsage().getCommitted();
74 assertEQ(1L, 1L, "Make assert load");
75
76 // Must do a GC to update performance counters
77 System.gc();
78 assertEQ(getMinCapacity(perfNS), pool.getUsage().getInit(), "MinCapacity out of sync");
79
80 // Adding a second GC due to metadata allocations caused by getting the
81 // initial size from the pool. This is needed when running with -Xcomp.
82 System.gc();
83 assertEQ(getUsed(perfNS), pool.getUsage().getUsed(), "Used out of sync");
84 assertEQ(getCapacity(perfNS), pool.getUsage().getCommitted(), "Committed out of sync");
85 }
86
87 private static long getMinCapacity(String ns) throws Exception {
88 return PerfCounters.findByName(ns + ".minCapacity").longValue();
89 }
90
91 private static long getCapacity(String ns) throws Exception {
92 return PerfCounters.findByName(ns + ".capacity").longValue();
93 }
94
95 private static long getUsed(String ns) throws Exception {
96 return PerfCounters.findByName(ns + ".used").longValue();
97 }
98 }
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