Aprof
by Devexperts
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These data is organized in a tree structure with types of objects being tree roots. Here is the example of how it might look like in the actual output:
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java.util.LinkedHashMap$Entry: 18,880 (0%) bytes in 590 (0%) objects (avg size 32 bytes)
java.util.LinkedHashMap.createEntry: 18,560 (98%) bytes in 580 (98%) objects
com.devexperts.aprof.AProfAgent.go: 18,432 (99%) bytes in 576 (99%) objects
java.util.HashMap.put: 128 (0%) bytes in 4 (0%) objects
java.io.ExpiringCache.put: 128 (100%) bytes in 4 (100%) objects
java.util.LinkedHashMap.init: 320 (1%) bytes in 10 (1%) objects
com.devexperts.aprof.AProfAgent.go: 128 (40%) bytes in 4 (40%) objects
java.util.HashMap.<init>: 128 (40%) bytes in 4 (40%) objects
java.util.LinkedHashMap.<init>: 128 (100%) bytes in 4 (100%) objects
java.util.HashSet.<init>: 64 (20%) bytes in 2 (20%) objects
java.util.LinkedHashSet.<init>: 64 (100%) bytes in 2 (100%) objects
java.lang.Long: 18,336 (0%) bytes in 1,146 (0%) objects (avg size 16 bytes)
org.objectweb.asm.ClassReader.readConst: 18,304 (99%) bytes in 1,144 (99%) objects
com.devexperts.aprof.AProfAgent.go: 16,992 (92%) bytes in 1,062 (92%) objects
com.devexperts.aprof.transformer.AProfTransformer.transform: 1,312 (7%) bytes in 82 (7%) objects
java.lang.Long.valueOf: 16 (0%) bytes in 1 (0%) objects
java.lang.Long.valueOf: 16 (100%) bytes in 1 (100%) objects
com.devexperts.sample.FibonacciNumbers.main: 16 (100%) bytes in 1 (100%) objects
sun.reflect.UnsafeLongFieldAccessorImpl.get: 16 (0%) bytes in 1 (0%) objects
com.devexperts.aprof.AProfAgent.go: 16 (100%) bytes in 1 (100%) objects
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TOTAL allocation dump for 26,142 ms (0h00m26s)
Allocated 48,231,592 bytes in 757,741 objects in 953 locations of 299 classes
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char[]: 12,568,720 (26%) bytes in 185,155 (24%) objects (avg size 68 bytes)
java.util.Arrays.copyOfRange: 3,392,352 (26%) bytes in 51,144 (27%) objects (avg size 66 bytes)
com.devexperts.aprof.AProfAgent.go: 2,370,320 (69%) bytes in 35,586 (69%) objects (avg size 67 bytes)
com.devexperts.aprof.transformer.AProfTransformer.transform: 1,014,784 (29%) bytes in 15,491 (30%) objects (avg size 66 bytes)
java.lang.StringBuilder.toString: 4,896 (0%) bytes in 49 (0%) objects (avg size 100 bytes)
java.net.URLStreamHandler.parseURL: 1,504 (30%) bytes in 10 (20%) objects (avg size 150 bytes)
sun.net.www.protocol.jar.Handler.parseContextSpec: 624 (12%) bytes in 2 (4%) objects (avg size 312 bytes)
sun.net.www.protocol.jar.Handler.parseURL: 624 (12%) bytes in 2 (4%) objects (avg size 312 bytes)
sun.net.www.ParseUtil.decode: 560 (11%) bytes in 4 (8%) objects (avg size 140 bytes)
java.util.ResourceBundle$Control.toBundleName: 256 (5%) bytes in 3 (6%) objects (avg size 85 bytes)
java.util.ServiceLoader$LazyIterator.hasNext: 256 (5%) bytes in 2 (4%) objects (avg size 128 bytes)
java.io.ObjectStreamClass.getClassSignature: 224 (4%) bytes in 5 (10%) objects (avg size 45 bytes)
java.util.Locale.toString: 112 (2%) bytes in 6 (12%) objects (avg size 19 bytes)
sun.util.resources.LocaleData$LocaleDataResourceBundleControl.getCandidateLocales: 112 (2%) bytes in 4 (8%) objects (avg size 28 bytes)
java.net.URLClassLoader.getPermissions: 104 (2%) bytes in 1 (2%) objects (avg size 104 bytes)
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There are no suspicious memory allocations here. Note, that for most programs it is normal to have the most garbage generated for char[] objects.
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