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comparison agent/src/share/classes/sun/jvm/hotspot/tools/HeapSummary.java @ 3984:81aa07130d30

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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
comparison
equal deleted inserted replaced
3983:811ec3d0833b 3984:81aa07130d30
96 printGen(gen); 96 printGen(gen);
97 } 97 }
98 } 98 }
99 } else if (sharedHeap instanceof G1CollectedHeap) { 99 } else if (sharedHeap instanceof G1CollectedHeap) {
100 G1CollectedHeap g1h = (G1CollectedHeap) sharedHeap; 100 G1CollectedHeap g1h = (G1CollectedHeap) sharedHeap;
101 101 G1MonitoringSupport g1mm = g1h.g1mm();
102 System.out.println("Garbage-First (G1) Heap"); 102 System.out.println("G1 Young Generation");
103 long capacityBytes = g1h.capacity(); 103 printG1Space("Eden Space:", g1mm.edenUsed(), g1mm.edenCommitted());
104 long usedBytes = g1h.used(); 104 printG1Space("From Space:", g1mm.survivorUsed(), g1mm.survivorCommitted());
105 long freeBytes = capacityBytes - usedBytes; 105 printG1Space("To Space:", 0, 0);
106 printValMB("region size = ", HeapRegion.grainBytes()); 106 printG1Space("G1 Old Generation", g1mm.oldUsed(), g1mm.oldCommitted());
107 printValue("regions = ", g1h.n_regions());
108 printValMB("capacity = ", capacityBytes);
109 printValMB("used = ", usedBytes);
110 printValMB("free = ", freeBytes);
111 System.out.println(alignment + (double) usedBytes * 100.0 / capacityBytes + "% used");
112 } else { 107 } else {
113 throw new RuntimeException("unknown SharedHeap type : " + heap.getClass()); 108 throw new RuntimeException("unknown SharedHeap type : " + heap.getClass());
114 } 109 }
115 // Perm generation shared by the above 110 // Perm generation shared by the above
116 Generation permGen = sharedHeap.permGen(); 111 Generation permGen = sharedHeap.permGen();
215 printValMB("used = ", space.used()); 210 printValMB("used = ", space.used());
216 printValMB("free = ", space.free()); 211 printValMB("free = ", space.free());
217 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used"); 212 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used");
218 } 213 }
219 214
215 private void printG1Space(String spaceName, long used, long capacity) {
216 long free = capacity - used;
217 System.out.println(spaceName);
218 printValMB("capacity = ", capacity);
219 printValMB("used = ", used);
220 printValMB("free = ", free);
221 double occPerc = (capacity > 0) ? (double) used * 100.0 / capacity : 0.0;
222 System.out.println(alignment + occPerc + "% used");
223 }
224
220 private static final double FACTOR = 1024*1024; 225 private static final double FACTOR = 1024*1024;
221 private void printValMB(String title, long value) { 226 private void printValMB(String title, long value) {
222 if (value < 0) { 227 if (value < 0) {
223 System.out.println(alignment + title + (value >>> 20) + " MB"); 228 System.out.println(alignment + title + (value >>> 20) + " MB");
224 } else { 229 } else {