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comparison agent/src/share/classes/sun/jvm/hotspot/tools/HeapSummary.java @ 4830:0b3d1ec6eaee

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7097586: G1: improve the per-space output when using jmap -heap Summary: Extend the jmap -heap output for G1 to include some more G1-specific information. Reviewed-by: brutisso, johnc, poonam
author tonyp
date Wed, 18 Jan 2012 10:30:12 -0500
parents e3e363b2bf19
children da91efe96a93
comparison
equal deleted inserted replaced
4829:9509c20bba28 4830:0b3d1ec6eaee
1 /* 1 /*
2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
65 printValMB("OldSize = ", getFlagValue("OldSize", flagMap)); 65 printValMB("OldSize = ", getFlagValue("OldSize", flagMap));
66 printValue("NewRatio = ", getFlagValue("NewRatio", flagMap)); 66 printValue("NewRatio = ", getFlagValue("NewRatio", flagMap));
67 printValue("SurvivorRatio = ", getFlagValue("SurvivorRatio", flagMap)); 67 printValue("SurvivorRatio = ", getFlagValue("SurvivorRatio", flagMap));
68 printValMB("PermSize = ", getFlagValue("PermSize", flagMap)); 68 printValMB("PermSize = ", getFlagValue("PermSize", flagMap));
69 printValMB("MaxPermSize = ", getFlagValue("MaxPermSize", flagMap)); 69 printValMB("MaxPermSize = ", getFlagValue("MaxPermSize", flagMap));
70 printValMB("G1HeapRegionSize = ", HeapRegion.grainBytes());
70 71
71 System.out.println(); 72 System.out.println();
72 System.out.println("Heap Usage:"); 73 System.out.println("Heap Usage:");
73 74
74 if (heap instanceof SharedHeap) { 75 if (heap instanceof SharedHeap) {
98 } 99 }
99 } 100 }
100 } else if (sharedHeap instanceof G1CollectedHeap) { 101 } else if (sharedHeap instanceof G1CollectedHeap) {
101 G1CollectedHeap g1h = (G1CollectedHeap) sharedHeap; 102 G1CollectedHeap g1h = (G1CollectedHeap) sharedHeap;
102 G1MonitoringSupport g1mm = g1h.g1mm(); 103 G1MonitoringSupport g1mm = g1h.g1mm();
103 System.out.println("G1 Young Generation"); 104 long edenRegionNum = g1mm.edenRegionNum();
104 printG1Space("Eden Space:", g1mm.edenUsed(), g1mm.edenCommitted()); 105 long survivorRegionNum = g1mm.survivorRegionNum();
105 printG1Space("From Space:", g1mm.survivorUsed(), g1mm.survivorCommitted()); 106 HeapRegionSetBase oldSet = g1h.oldSet();
106 printG1Space("To Space:", 0, 0); 107 HeapRegionSetBase humongousSet = g1h.humongousSet();
107 printG1Space("G1 Old Generation", g1mm.oldUsed(), g1mm.oldCommitted()); 108 long oldRegionNum = oldSet.regionNum() + humongousSet.regionNum();
109 printG1Space("G1 Heap:", g1h.n_regions(),
110 g1h.used(), g1h.capacity());
111 System.out.println("G1 Young Generation:");
112 printG1Space("Eden Space:", edenRegionNum,
113 g1mm.edenUsed(), g1mm.edenCommitted());
114 printG1Space("Survivor Space:", survivorRegionNum,
115 g1mm.survivorUsed(), g1mm.survivorCommitted());
116 printG1Space("G1 Old Generation:", oldRegionNum,
117 g1mm.oldUsed(), g1mm.oldCommitted());
108 } else { 118 } else {
109 throw new RuntimeException("unknown SharedHeap type : " + heap.getClass()); 119 throw new RuntimeException("unknown SharedHeap type : " + heap.getClass());
110 } 120 }
111 // Perm generation shared by the above 121 // Perm generation shared by the above
112 Generation permGen = sharedHeap.permGen(); 122 Generation permGen = sharedHeap.permGen();
214 printValMB("used = ", space.used()); 224 printValMB("used = ", space.used());
215 printValMB("free = ", space.free()); 225 printValMB("free = ", space.free());
216 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used"); 226 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used");
217 } 227 }
218 228
219 private void printG1Space(String spaceName, long used, long capacity) { 229 private void printG1Space(String spaceName, long regionNum,
230 long used, long capacity) {
220 long free = capacity - used; 231 long free = capacity - used;
221 System.out.println(spaceName); 232 System.out.println(spaceName);
233 printValue("regions = ", regionNum);
222 printValMB("capacity = ", capacity); 234 printValMB("capacity = ", capacity);
223 printValMB("used = ", used); 235 printValMB("used = ", used);
224 printValMB("free = ", free); 236 printValMB("free = ", free);
225 double occPerc = (capacity > 0) ? (double) used * 100.0 / capacity : 0.0; 237 double occPerc = (capacity > 0) ? (double) used * 100.0 / capacity : 0.0;
226 System.out.println(alignment + occPerc + "% used"); 238 System.out.println(alignment + occPerc + "% used");