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annotate agent/src/share/classes/sun/jvm/hotspot/tools/HeapSummary.java @ 3984:81aa07130d30
7097048: G1: extend the G1 SA changes to print per-heap space information
Reviewed-by: brutisso, johnc
| author | tonyp |
|---|---|
| date | Mon, 03 Oct 2011 19:04:14 -0400 |
| parents | 4f93f0d00802 |
| children | e3e363b2bf19 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 3972 | 2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.tools; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.gc_interface.*; | |
| 3972 | 29 import sun.jvm.hotspot.gc_implementation.g1.*; |
| 0 | 30 import sun.jvm.hotspot.gc_implementation.parallelScavenge.*; |
| 31 import sun.jvm.hotspot.gc_implementation.shared.*; | |
| 32 import sun.jvm.hotspot.memory.*; | |
| 33 import sun.jvm.hotspot.runtime.*; | |
| 34 | |
| 35 public class HeapSummary extends Tool { | |
| 36 | |
| 37 public static void main(String[] args) { | |
| 38 HeapSummary hs = new HeapSummary(); | |
| 39 hs.start(args); | |
| 40 hs.stop(); | |
| 41 } | |
| 42 | |
| 43 public void run() { | |
| 44 CollectedHeap heap = VM.getVM().getUniverse().heap(); | |
| 45 VM.Flag[] flags = VM.getVM().getCommandLineFlags(); | |
| 46 Map flagMap = new HashMap(); | |
| 47 if (flags == null) { | |
| 48 System.out.println("WARNING: command line flags are not available"); | |
| 49 } else { | |
| 50 for (int f = 0; f < flags.length; f++) { | |
| 51 flagMap.put(flags[f].getName(), flags[f]); | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 System.out.println(); | |
| 56 printGCAlgorithm(flagMap); | |
| 57 System.out.println(); | |
| 58 System.out.println("Heap Configuration:"); | |
| 59 printValue("MinHeapFreeRatio = ", getFlagValue("MinHeapFreeRatio", flagMap)); | |
| 60 printValue("MaxHeapFreeRatio = ", getFlagValue("MaxHeapFreeRatio", flagMap)); | |
| 61 printValMB("MaxHeapSize = ", getFlagValue("MaxHeapSize", flagMap)); | |
| 62 printValMB("NewSize = ", getFlagValue("NewSize", flagMap)); | |
| 63 printValMB("MaxNewSize = ", getFlagValue("MaxNewSize", flagMap)); | |
| 64 printValMB("OldSize = ", getFlagValue("OldSize", flagMap)); | |
| 65 printValue("NewRatio = ", getFlagValue("NewRatio", flagMap)); | |
| 66 printValue("SurvivorRatio = ", getFlagValue("SurvivorRatio", flagMap)); | |
| 67 printValMB("PermSize = ", getFlagValue("PermSize", flagMap)); | |
| 68 printValMB("MaxPermSize = ", getFlagValue("MaxPermSize", flagMap)); | |
| 69 | |
| 70 System.out.println(); | |
| 71 System.out.println("Heap Usage:"); | |
| 72 | |
| 3972 | 73 if (heap instanceof SharedHeap) { |
| 74 SharedHeap sharedHeap = (SharedHeap) heap; | |
| 75 if (sharedHeap instanceof GenCollectedHeap) { | |
| 76 GenCollectedHeap genHeap = (GenCollectedHeap) sharedHeap; | |
| 77 for (int n = 0; n < genHeap.nGens(); n++) { | |
| 78 Generation gen = genHeap.getGen(n); | |
| 79 if (gen instanceof sun.jvm.hotspot.memory.DefNewGeneration) { | |
| 80 System.out.println("New Generation (Eden + 1 Survivor Space):"); | |
| 81 printGen(gen); | |
| 0 | 82 |
| 3972 | 83 ContiguousSpace eden = ((DefNewGeneration)gen).eden(); |
| 84 System.out.println("Eden Space:"); | |
| 85 printSpace(eden); | |
| 86 | |
| 87 ContiguousSpace from = ((DefNewGeneration)gen).from(); | |
| 88 System.out.println("From Space:"); | |
| 89 printSpace(from); | |
| 0 | 90 |
| 3972 | 91 ContiguousSpace to = ((DefNewGeneration)gen).to(); |
| 92 System.out.println("To Space:"); | |
| 93 printSpace(to); | |
| 94 } else { | |
| 95 System.out.println(gen.name() + ":"); | |
| 96 printGen(gen); | |
| 97 } | |
| 98 } | |
| 99 } else if (sharedHeap instanceof G1CollectedHeap) { | |
| 100 G1CollectedHeap g1h = (G1CollectedHeap) sharedHeap; | |
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101 G1MonitoringSupport g1mm = g1h.g1mm(); |
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102 System.out.println("G1 Young Generation"); |
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103 printG1Space("Eden Space:", g1mm.edenUsed(), g1mm.edenCommitted()); |
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104 printG1Space("From Space:", g1mm.survivorUsed(), g1mm.survivorCommitted()); |
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105 printG1Space("To Space:", 0, 0); |
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106 printG1Space("G1 Old Generation", g1mm.oldUsed(), g1mm.oldCommitted()); |
| 3972 | 107 } else { |
| 108 throw new RuntimeException("unknown SharedHeap type : " + heap.getClass()); | |
| 0 | 109 } |
| 3972 | 110 // Perm generation shared by the above |
| 111 Generation permGen = sharedHeap.permGen(); | |
| 0 | 112 System.out.println("Perm Generation:"); |
| 113 printGen(permGen); | |
| 114 } else if (heap instanceof ParallelScavengeHeap) { | |
| 115 ParallelScavengeHeap psh = (ParallelScavengeHeap) heap; | |
| 116 PSYoungGen youngGen = psh.youngGen(); | |
| 117 printPSYoungGen(youngGen); | |
| 118 | |
| 119 PSOldGen oldGen = psh.oldGen(); | |
| 120 long oldFree = oldGen.capacity() - oldGen.used(); | |
| 121 System.out.println("PS Old Generation"); | |
| 122 printValMB("capacity = ", oldGen.capacity()); | |
| 123 printValMB("used = ", oldGen.used()); | |
| 124 printValMB("free = ", oldFree); | |
| 125 System.out.println(alignment + (double)oldGen.used() * 100.0 / oldGen.capacity() + "% used"); | |
| 126 | |
| 127 PSPermGen permGen = psh.permGen(); | |
| 128 long permFree = permGen.capacity() - permGen.used(); | |
| 129 System.out.println("PS Perm Generation"); | |
| 130 printValMB("capacity = ", permGen.capacity()); | |
| 131 printValMB("used = ", permGen.used()); | |
| 132 printValMB("free = ", permFree); | |
| 133 System.out.println(alignment + (double)permGen.used() * 100.0 / permGen.capacity() + "% used"); | |
| 134 } else { | |
| 3972 | 135 throw new RuntimeException("unknown CollectedHeap type : " + heap.getClass()); |
| 0 | 136 } |
| 137 } | |
| 138 | |
| 139 // Helper methods | |
| 140 | |
| 141 private void printGCAlgorithm(Map flagMap) { | |
| 142 // print about new generation | |
| 143 long l = getFlagValue("UseParNewGC", flagMap); | |
| 144 if (l == 1L) { | |
| 145 System.out.println("using parallel threads in the new generation."); | |
| 146 } | |
| 147 | |
| 148 l = getFlagValue("UseTLAB", flagMap); | |
| 149 if (l == 1L) { | |
| 150 System.out.println("using thread-local object allocation."); | |
| 151 } | |
| 152 | |
| 153 l = getFlagValue("UseConcMarkSweepGC", flagMap); | |
| 154 if (l == 1L) { | |
| 155 System.out.println("Concurrent Mark-Sweep GC"); | |
| 156 return; | |
| 157 } | |
| 158 | |
| 159 l = getFlagValue("UseParallelGC", flagMap); | |
| 160 if (l == 1L) { | |
| 161 System.out.print("Parallel GC "); | |
| 162 l = getFlagValue("ParallelGCThreads", flagMap); | |
| 163 System.out.println("with " + l + " thread(s)"); | |
| 164 return; | |
| 165 } | |
| 166 | |
| 3972 | 167 l = getFlagValue("UseG1GC", flagMap); |
| 168 if (l == 1L) { | |
| 169 System.out.print("Garbage-First (G1) GC "); | |
| 170 l = getFlagValue("ParallelGCThreads", flagMap); | |
| 171 System.out.println("with " + l + " thread(s)"); | |
| 172 return; | |
| 173 } | |
| 174 | |
| 0 | 175 System.out.println("Mark Sweep Compact GC"); |
| 176 } | |
| 177 | |
| 178 private void printPSYoungGen(PSYoungGen youngGen) { | |
| 179 System.out.println("PS Young Generation"); | |
| 180 MutableSpace eden = youngGen.edenSpace(); | |
| 181 System.out.println("Eden Space:"); | |
| 182 printMutableSpace(eden); | |
| 183 MutableSpace from = youngGen.fromSpace(); | |
| 184 System.out.println("From Space:"); | |
| 185 printMutableSpace(from); | |
| 186 MutableSpace to = youngGen.toSpace(); | |
| 187 System.out.println("To Space:"); | |
| 188 printMutableSpace(to); | |
| 189 } | |
| 190 | |
| 191 private void printMutableSpace(MutableSpace space) { | |
| 192 printValMB("capacity = ", space.capacity()); | |
| 193 printValMB("used = ", space.used()); | |
| 194 long free = space.capacity() - space.used(); | |
| 195 printValMB("free = ", free); | |
| 196 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used"); | |
| 197 } | |
| 198 | |
| 199 private static String alignment = " "; | |
| 200 | |
| 201 private void printGen(Generation gen) { | |
| 202 printValMB("capacity = ", gen.capacity()); | |
| 203 printValMB("used = ", gen.used()); | |
| 204 printValMB("free = ", gen.free()); | |
| 205 System.out.println(alignment + (double)gen.used() * 100.0 / gen.capacity() + "% used"); | |
| 206 } | |
| 207 | |
| 208 private void printSpace(ContiguousSpace space) { | |
| 209 printValMB("capacity = ", space.capacity()); | |
| 210 printValMB("used = ", space.used()); | |
| 211 printValMB("free = ", space.free()); | |
| 212 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used"); | |
| 213 } | |
| 214 | |
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215 private void printG1Space(String spaceName, long used, long capacity) { |
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216 long free = capacity - used; |
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217 System.out.println(spaceName); |
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218 printValMB("capacity = ", capacity); |
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219 printValMB("used = ", used); |
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220 printValMB("free = ", free); |
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221 double occPerc = (capacity > 0) ? (double) used * 100.0 / capacity : 0.0; |
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222 System.out.println(alignment + occPerc + "% used"); |
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223 } |
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224 |
| 0 | 225 private static final double FACTOR = 1024*1024; |
| 226 private void printValMB(String title, long value) { | |
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227 if (value < 0) { |
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228 System.out.println(alignment + title + (value >>> 20) + " MB"); |
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229 } else { |
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230 double mb = value/FACTOR; |
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231 System.out.println(alignment + title + value + " (" + mb + "MB)"); |
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232 } |
| 0 | 233 } |
| 234 | |
| 235 private void printValue(String title, long value) { | |
| 236 System.out.println(alignment + title + value); | |
| 237 } | |
| 238 | |
| 239 private long getFlagValue(String name, Map flagMap) { | |
| 240 VM.Flag f = (VM.Flag) flagMap.get(name); | |
| 241 if (f != null) { | |
| 242 if (f.isBool()) { | |
| 243 return f.getBool()? 1L : 0L; | |
| 244 } else { | |
| 245 return Long.parseLong(f.getValue()); | |
| 246 } | |
| 247 } else { | |
| 248 return -1; | |
| 249 } | |
| 250 } | |
| 251 } |