[JDK工具-6] jmap java内存映射工具

文章目录

  • [1. 介绍](#1. 介绍)
  • [2. 主要选项](#2. 主要选项)
  • [3. 生成java堆转储快照 jmap -dump](#3. 生成java堆转储快照 jmap -dump)
  • [4. 显示堆详细信息 jmap -heap pid](#4. 显示堆详细信息 jmap -heap pid)
  • [5. 显示堆中对象统计信息 jmap -histo pid](#5. 显示堆中对象统计信息 jmap -histo pid)

jmap(Memory Map for Java)

1. 介绍

位置:jdk\bin
作用:

  • jdk安装后会自带一些小工具,jmap命令(Memory Map for Java)是其中之一。主要用于打印指定Java进程(或核心文件、远程调试服务器)的共享对象内存映射或堆内存细节。

  • jmap命令可以获得运行中的jvm的堆的快照,从而可以离线分析堆,以检查内存泄漏,检查一些严重影响性能的大对象的创建,检查系统中什么对象最多,各种对象所占内存的大小等等。可以使用jmap生成Heap Dump。

  • 如果不想使用jmap命令,要想获取Java堆转储快照还有一些比较"暴力"的手段:譬如在前面用过的 -XX:+HeapDumpOnOutOfMemoryError参数,可以让虚拟机在OOM异常出现之后自动生成dump文件,通过-XX:+HeapDumpOnCtrlBreak参数可以使用[ctrl]+[Break]键让虚拟机生成dump文件,又或者在Linux系统下通过Kill -3 命令发送进程退出信息"恐吓"一下虚拟机,也能拿到dump文件。

  • jmap的作用并不仅仅是为了获取dump文件,他还可以查询finalize执行队列,java堆和永久代的详细信息,如空间使用率、当前用的是哪种收集器等。

语法:

txt 复制代码
D:\javasoft\java_soft\jdk\bin>jmap
Usage:
    jmap [option] <pid>
        (to connect to running process)
    jmap [option] <executable <core>
        (to connect to a core file)
    jmap [option] [server_id@]<remote server IP or hostname>
        (to connect to remote debug server)

where <option> is one of:
    <none>               to print same info as Solaris pmap
    -heap                to print java heap summary
    -histo[:live]        to print histogram of java object heap; if the "live"
                         suboption is specified, only count live objects
    -clstats             to print class loader statistics
    -finalizerinfo       to print information on objects awaiting finalization
    -dump:<dump-options> to dump java heap in hprof binary format
                         dump-options:
                           live         dump only live objects; if not specified,
                                        all objects in the heap are dumped.
                           format=b     binary format
                           file=<file>  dump heap to <file>
                         Example: jmap -dump:live,format=b,file=heap.bin <pid>
    -F                   force. Use with -dump:<dump-options> <pid> or -histo
                         to force a heap dump or histogram when <pid> does not
                         respond. The "live" suboption is not supported
                         in this mode.
    -h | -help           to print this help message
    -J<flag>             to pass <flag> directly to the runtime system

2. 主要选项

选项 作用
-dump 生成java堆转储快照,格式为:-dump:[live,]format=b,file=,其中live子参数说明是否只dump出存活对象
-finalizerinfo 显示在F-Queue中等待Finalizer线程执行finalize方法的对象,只在linux/solaris平台下有效
-heap 显示堆详细信息,如使用哪种回收期、参数配置、分带状况等,只在linux/solaris平台下有效
-histo 显示堆中对象统计信息,包括类、实例数量和合计容量
-permstat 以ClassLoader为统计口径显示永久代内存状况,只在linux/solaris平台下有效
-F 当虚拟机进程对-dump选项没有响应时,可以使用这个选项强制生成dump快照,只在linux/solaris平台下有效

3. 生成java堆转储快照 jmap -dump

生成java对转存快照,格式:jmap -dump:[live,]format=b,file=文件名

可以使用jdk提供的jvisualvm.exe查看hprof文件

4. 显示堆详细信息 jmap -heap pid

txt 复制代码
D:\javasoft\java_soft\jdk\bin>jmap -heap 8644
Attaching to process ID 8644, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.271-b09

using thread-local object allocation.
Parallel GC with 8 thread(s)

Heap Configuration:
   MinHeapFreeRatio         = 0
   MaxHeapFreeRatio         = 100
   MaxHeapSize              = 1853882368 (1768.0MB)
   NewSize                  = 38797312 (37.0MB)
   MaxNewSize               = 617611264 (589.0MB)
   OldSize                  = 78643200 (75.0MB)
   NewRatio                 = 2
   SurvivorRatio            = 8
   MetaspaceSize            = 21807104 (20.796875MB)
   CompressedClassSpaceSize = 1073741824 (1024.0MB)
   MaxMetaspaceSize         = 17592186044415 MB
   G1HeapRegionSize         = 0 (0.0MB)

Heap Usage:
PS Young Generation
Eden Space:
   capacity = 185597952 (177.0MB)
   used     = 1365920 (1.302642822265625MB)
   free     = 184232032 (175.69735717773438MB)
   0.7359563967602402% used
From Space:
   capacity = 16252928 (15.5MB)
   used     = 0 (0.0MB)
   free     = 16252928 (15.5MB)
   0.0% used
To Space:
   capacity = 18874368 (18.0MB)
   used     = 0 (0.0MB)
   free     = 18874368 (18.0MB)
   0.0% used
PS Old Generation
   capacity = 101187584 (96.5MB)
   used     = 26049224 (24.84247589111328MB)
   free     = 75138360 (71.65752410888672MB)
   25.743498332759877% used

21147 interned Strings occupying 2233672 bytes.

5. 显示堆中对象统计信息 jmap -histo pid

显示堆中对象统计信息,包括类、实例数量和合计容量

命令格式:jmap -histo[:live]

txt 复制代码
D:\javasoft\java_soft\jdk\bin>jps -l
10048 sun.tools.jps.Jps
13072 org/netbeans/Main
16212 com.xin.demo.threaddemo.bookdemo.DeadLockDemo
8644 com.xin.demo.XinJavaDemoApplication
5560
7016 org.jetbrains.jps.cmdline.Launcher
9544 com.xin.demo.threaddemo.bookdemo.OOMTest

D:\javasoft\java_soft\jdk\bin>jmap -histo 9544

 num     #instances         #bytes  class name
----------------------------------------------
   1:          1066        1822048  [B
   2:          6646         978560  [C
   3:           390         186216  [I
   4:          6079         145896  java.lang.String
   5:           722          82784  java.lang.Class
   6:          1372          68968  [Ljava.lang.Object;
   7:           845          33800  java.util.LinkedHashMap$Entry
   8:           791          31640  java.util.TreeMap$Entry
   9:           783          25056  java.util.HashMap$Node
  10:           443          22376  [Ljava.lang.String;
  11:           305          19520  java.net.URL
  12:            57          16656  [Ljava.util.HashMap$Node;
  13:           406          16240  java.lang.ref.Finalizer
  14:           555          13320  java.util.LinkedList$Node
  15:           107          10272  java.util.jar.JarFile$JarFileEntry
  16:           123           9840  [Ljava.util.WeakHashMap$Entry;
  17:           286           9152  java.util.LinkedList
  18:           152           8512  sun.misc.URLClassPath$JarLoader
  19:           113           8136  java.lang.reflect.Field
  20:           120           7680  java.util.jar.JarFile
  21:           235           7520  java.util.Hashtable$Entry
  22:           123           6888  sun.nio.cs.UTF_8$Encoder
  23:           121           6776  java.util.zip.ZipFile$ZipFileInputStream
  24:           111           6216  java.util.zip.ZipFile$ZipFileInflaterInputStream
  25:           257           6168  java.io.ExpiringCache$Entry
  26:           123           5904  java.util.WeakHashMap
  27:           110           5280  java.util.zip.Inflater
  28:           121           4840  java.lang.ref.SoftReference
  29:           119           4760  sun.nio.cs.UTF_8$Decoder
  30:           130           4160  java.lang.ref.ReferenceQueue
  31:           256           4096  java.lang.Integer
  32:           120           3840  java.util.zip.ZipCoder
  33:           111           3552  java.util.concurrent.ConcurrentHashMap$Node
  34:           132           3168  java.lang.StringBuffer
  35:            22           3072  [Ljava.util.Hashtable$Entry;
  36:             8           3008  java.lang.Thread
  37:           120           2880  java.util.ArrayDeque
  38:            59           2832  java.util.HashMap
  39:           110           2640  java.util.zip.ZStreamRef
  40:             5           2600  [J
  41:           106           2544  java.lang.StringBuilder
  42:            30           2400  [S
  43:             2           2384  [[Ljava.lang.Object;
  44:           132           2112  java.lang.ref.ReferenceQueue$Lock
  45:            26           2080  java.lang.reflect.Constructor
  46:            16           2048  [Ljava.util.concurrent.ConcurrentHashMap$Node;
  47:            60           1920  java.io.File
  48:            39           1872  sun.util.locale.LocaleObjectCache$CacheEntry
  49:             1           1568  [[B
  50:            96           1536  java.lang.Object
  51:            37           1480  java.io.ObjectStreamField
  52:            26           1456  java.lang.Class$ReflectionData
  53:            20           1280  java.util.concurrent.ConcurrentHashMap
  54:             2           1064  [Ljava.lang.invoke.MethodHandle;
  55:             1           1040  [Ljava.lang.Integer;
  56:             1           1040  [[C
  57:            36            864  java.util.jar.Attributes$Name
  58:            21            840  sun.util.locale.BaseLocale$Key
  59:            11            648  [Ljava.lang.reflect.Field;
  60:            19            608  java.util.Locale
  61:            19            608  sun.util.locale.BaseLocale
  62:            13            520  java.security.AccessControlContext
  63:            21            504  java.util.Locale$LocaleKey
  64:            10            480  java.util.Hashtable
  65:            12            480  java.util.WeakHashMap$Entry
  66:            18            432  sun.misc.MetaIndex
  67:            22            416  [Ljava.lang.Class;
  68:            10            400  java.io.FileDescriptor
  69:            13            392  [Ljava.io.ObjectStreamField;
  70:             1            384  com.intellij.rt.execution.application.AppMainV2$1
  71:             1            384  java.lang.ref.Finalizer$FinalizerThread
  72:            16            384  java.net.Parts
  73:             6            384  java.nio.DirectByteBuffer
  74:            16            384  java.util.ArrayList
  75:             1            376  java.lang.ref.Reference$ReferenceHandler
  76:             6            336  java.nio.DirectLongBufferU
  77:             7            336  java.nio.HeapCharBuffer
  78:             6            336  java.util.LinkedHashMap
  79:            10            320  java.lang.OutOfMemoryError
  80:             3            312  [D
  81:            13            312  [Ljava.lang.reflect.Constructor;
  82:            13            312  sun.reflect.NativeConstructorAccessorImpl
  83:             6            288  java.nio.HeapByteBuffer
  84:             6            288  java.util.Properties
  85:             3            280  [[Ljava.lang.String;
  86:             5            280  java.util.ResourceBundle$CacheKey
  87:             5            280  sun.util.calendar.ZoneInfo
  88:             3            264  java.lang.reflect.Method
  89:            11            264  java.net.StandardSocketOptions$StdSocketOption
  90:             8            256  java.util.Vector
  91:             3            240  [Ljava.lang.ThreadLocal$ThreadLocalMap$Entry;
  92:             5            240  java.util.Hashtable$Enumerator
  93:             7            224  java.nio.file.attribute.FileTime
  94:             9            216  sun.misc.JarIndex
  95:            13            208  sun.reflect.DelegatingConstructorAccessorImpl
  96:             5            200  java.security.ProtectionDomain
  97:             6            192  java.io.FileInputStream
  98:             6            192  java.lang.ThreadLocal$ThreadLocalMap$Entry
  99:             4            192  java.util.TreeMap
 100:             8            192  sun.misc.URLClassPath$3
 101:             4            192  sun.nio.cs.StreamEncoder
 102:             3            192  sun.nio.cs.ext.DoubleByte$Encoder
 103:             2            192  sun.util.calendar.Gregorian$Date
 104:             4            160  java.io.BufferedWriter
 105:             4            160  java.lang.ClassLoader$NativeLibrary
 106:             5            160  java.security.CodeSource
 107:             4            160  java.security.PrivilegedActionException
 108:             5            160  java.util.ResourceBundle$LoaderReference
 109:             5            160  sun.util.locale.provider.LocaleProviderAdapter$Type
 110:             6            144  sun.misc.PerfCounter
 111:             3            144  sun.misc.URLClassPath
 112:             2            128  java.io.ExpiringCache$1
 113:             4            128  java.lang.StringCoding$StringEncoder
 114:             8            128  java.util.HashSet
 115:             4            128  java.util.Stack
 116:             1            120  java.net.SocksSocketImpl
 117:             5            120  java.util.Collections$UnmodifiableRandomAccessList
 118:             5            120  sun.misc.FloatingDecimal$PreparedASCIIToBinaryBuffer
 119:             2            112  java.lang.Package
 120:             2            112  sun.nio.cs.ISO_8859_1$Encoder
 121:             2            112  sun.nio.cs.ext.DoubleByte$Decoder
 122:             2             96  java.io.BufferedReader
 123:             3             96  java.io.FileOutputStream
 124:             4             96  java.io.OutputStreamWriter
 125:             4             96  java.lang.RuntimePermission
 126:             3             96  java.lang.StringCoding$StringDecoder
 127:             2             96  java.lang.ThreadGroup
 128:             6             96  java.lang.ThreadLocal
 129:             3             96  java.lang.ref.WeakReference
 130:             1             96  java.net.DualStackPlainSocketImpl
 131:             2             96  java.util.ResourceBundle$BundleReference
 132:             6             96  java.util.jar.Attributes
 133:             4             96  jdk.net.ExtendedSocketOptions$ExtSocketOption
 134:             1             96  sun.misc.Launcher$AppClassLoader
 135:             3             96  sun.net.spi.DefaultProxySelector$NonProxyInfo
 136:             2             96  sun.nio.cs.StreamDecoder
 137:             4             96  sun.security.action.GetPropertyAction
 138:             1             88  java.util.jar.JarVerifier
 139:             1             88  sun.misc.Launcher$ExtClassLoader
 140:             5             80  [Ljava.security.Principal;
 141:             2             80  [Lsun.util.locale.provider.LocaleProviderAdapter$Type;
 142:             2             80  java.io.BufferedInputStream
 143:             2             80  java.io.ExpiringCache
 144:             5             80  java.security.ProtectionDomain$Key
 145:             2             80  java.util.ServiceLoader$LazyIterator
 146:             2             80  sun.misc.FloatingDecimal$BinaryToASCIIBuffer
 147:             2             80  sun.misc.URLClassPath$1
 148:             2             80  sun.misc.URLClassPath$2
 149:             2             80  sun.util.locale.LanguageTag
 150:             3             72  java.io.ByteArrayOutputStream
 151:             3             72  java.lang.ThreadLocal$ThreadLocalMap
 152:             3             72  java.net.Proxy$Type
 153:             3             72  java.util.Arrays$ArrayList
 154:             3             72  java.util.Collections$SynchronizedSet
 155:             1             72  java.util.ResourceBundle$RBClassLoader
 156:             3             72  java.util.concurrent.atomic.AtomicLong
 157:             3             72  sun.misc.FloatingDecimal$ExceptionalBinaryToASCIIBuffer
 158:             1             72  sun.util.locale.provider.JRELocaleProviderAdapter
 159:             1             64  [F
 160:             2             64  [Ljava.lang.Thread;
 161:             2             64  java.io.DataInputStream
 162:             2             64  java.io.FileNotFoundException
 163:             2             64  java.io.FilePermission
 164:             2             64  java.io.PrintStream
 165:             2             64  java.lang.ClassValue$Entry
 166:             2             64  java.lang.VirtualMachineError
 167:             2             64  java.lang.ref.ReferenceQueue$Null
 168:             2             64  java.security.BasicPermissionCollection
 169:             2             64  java.security.Permissions
 170:             2             64  java.util.ArrayList$Itr
 171:             2             64  java.util.LinkedHashMap$LinkedEntryIterator
 172:             2             64  java.util.ServiceLoader
 173:             1             48  [Ljava.io.File;
 174:             2             48  [Ljava.lang.reflect.Method;
 175:             1             48  [Ljava.net.URL;
 176:             2             48  [Ljava.util.Enumeration;
 177:             1             48  [Ljava.util.concurrent.TimeUnit;
 178:             2             48  java.io.BufferedOutputStream
 179:             2             48  java.io.File$PathStatus
 180:             2             48  java.io.FilePermissionCollection
 181:             2             48  java.lang.Class$1
 182:             2             48  java.net.InetAddress$Cache
 183:             2             48  java.net.InetAddress$Cache$Type
 184:             1             48  java.net.SocketInputStream
 185:             2             48  java.net.URLClassLoader$3
 186:             2             48  java.nio.charset.CoderResult
 187:             3             48  java.nio.charset.CodingErrorAction
 188:             3             48  java.util.Collections$UnmodifiableSet
 189:             2             48  java.util.Date
 190:             3             48  java.util.HashMap$KeySet
 191:             3             48  java.util.LinkedHashMap$LinkedKeySet
 192:             2             48  java.util.ServiceLoader$1
 193:             1             48  java.util.StringTokenizer
 194:             2             48  java.util.jar.Manifest
 195:             2             48  sun.misc.CompoundEnumeration
 196:             2             48  sun.misc.FileURLMapper
 197:             2             48  sun.misc.NativeSignalHandler
 198:             2             48  sun.misc.Signal
 199:             3             48  sun.net.www.protocol.jar.Handler
 200:             2             48  sun.nio.cs.Surrogate$Parser
 201:             1             48  sun.nio.cs.US_ASCII$Decoder
 202:             1             48  sun.util.locale.provider.LocaleResources$ResourceReference
 203:             1             48  sun.util.resources.TimeZoneNames
 204:             1             48  sun.util.resources.en.TimeZoneNames_en
 205:             1             40  java.util.ResourceBundle$1
 206:             1             40  sun.nio.cs.StandardCharsets$Aliases
 207:             1             40  sun.nio.cs.StandardCharsets$Cache
 208:             1             40  sun.nio.cs.StandardCharsets$Classes
 209:             1             40  sun.nio.cs.ext.ExtendedCharsets
 210:             1             32  [Ljava.lang.OutOfMemoryError;
 211:             2             32  [Ljava.lang.StackTraceElement;
 212:             1             32  [Ljava.lang.ThreadGroup;
 213:             1             32  [Ljava.net.Proxy$Type;
 214:             1             32  java.io.ByteArrayInputStream
 215:             2             32  java.io.FileInputStream$1
 216:             1             32  java.io.WinNTFileSystem
 217:             1             32  java.lang.ArithmeticException
 218:             2             32  java.lang.Boolean
 219:             2             32  java.lang.ClassLoader$2
 220:             1             32  java.lang.NullPointerException
 221:             1             32  java.net.InetAddress$InetAddressHolder
 222:             1             32  java.net.Socket
 223:             2             32  java.net.URLClassLoader$3$1
 224:             2             32  java.nio.ByteOrder
 225:             2             32  java.util.Hashtable$KeySet
 226:             2             32  java.util.LinkedHashMap$LinkedEntrySet
 227:             1             32  java.util.LinkedHashMap$LinkedKeyIterator
 228:             2             32  java.util.concurrent.atomic.AtomicInteger
 229:             1             32  java.util.concurrent.atomic.AtomicReferenceFieldUpdater$AtomicReferenceFieldUpdaterImpl
 230:             1             32  jdk.net.ExtendedSocketOptions$1
 231:             1             32  sun.instrument.InstrumentationImpl
 232:             2             32  sun.misc.URLClassPath$JarLoader$1
 233:             1             32  sun.nio.cs.StandardCharsets
 234:             1             32  sun.util.locale.provider.LocaleResources
 235:             1             32  sun.util.locale.provider.LocaleServiceProviderPool
 236:             1             24  [Ljava.io.File$PathStatus;
 237:             1             24  [Ljava.lang.ClassValue$Entry;
 238:             1             24  [Ljava.net.InetAddress$Cache$Type;
 239:             1             24  [Ljava.security.ProtectionDomain;
 240:             1             24  [Lsun.launcher.LauncherHelper;
 241:             1             24  java.io.FileReader
 242:             1             24  java.io.InputStreamReader
 243:             1             24  java.lang.ClassValue$Version
 244:             1             24  java.lang.invoke.MethodHandleImpl$4
 245:             1             24  java.lang.reflect.ReflectPermission
 246:             1             24  java.net.Inet4Address
 247:             1             24  java.net.Inet6AddressImpl
 248:             1             24  java.net.Proxy
 249:             1             24  java.util.BitSet
 250:             1             24  java.util.Collections$EmptyMap
 251:             1             24  java.util.Collections$SetFromMap
 252:             1             24  java.util.Collections$UnmodifiableCollection$1
 253:             1             24  java.util.Locale$Cache
 254:             1             24  java.util.ResourceBundle$Control$CandidateListCache
 255:             1             24  java.util.concurrent.TimeUnit$1
 256:             1             24  java.util.concurrent.TimeUnit$2
 257:             1             24  java.util.concurrent.TimeUnit$3
 258:             1             24  java.util.concurrent.TimeUnit$4
 259:             1             24  java.util.concurrent.TimeUnit$5
 260:             1             24  java.util.concurrent.TimeUnit$6
 261:             1             24  java.util.concurrent.TimeUnit$7
 262:             1             24  sun.instrument.TransformerManager
 263:             1             24  sun.launcher.LauncherHelper
 264:             1             24  sun.misc.URLClassPath$FileLoader
 265:             1             24  sun.nio.cs.ISO_8859_1
 266:             1             24  sun.nio.cs.ThreadLocalCoders$1
 267:             1             24  sun.nio.cs.ThreadLocalCoders$2
 268:             1             24  sun.nio.cs.US_ASCII
 269:             1             24  sun.nio.cs.UTF_16
 270:             1             24  sun.nio.cs.UTF_16BE
 271:             1             24  sun.nio.cs.UTF_16LE
 272:             1             24  sun.nio.cs.UTF_8
 273:             1             24  sun.nio.cs.ext.GBK
 274:             1             24  sun.reflect.NativeMethodAccessorImpl
 275:             1             24  sun.util.locale.BaseLocale$Cache
 276:             1             24  sun.util.locale.provider.SPILocaleProviderAdapter$1
 277:             1             24  sun.util.locale.provider.TimeZoneNameProviderImpl
 278:             1             24  sun.util.resources.LocaleData$1
 279:             1             16  [Ljava.lang.Throwable;
 280:             1             16  [Ljava.security.CodeSigner;
 281:             1             16  [Ljava.security.cert.Certificate;
 282:             1             16  [Lsun.instrument.TransformerManager$TransformerInfo;
 283:             1             16  [Lsun.util.calendar.ZoneInfoFile$ZoneOffsetTransitionRule;
 284:             1             16  java.io.FileDescriptor$1
 285:             1             16  java.lang.CharacterDataLatin1
 286:             1             16  java.lang.ClassValue$Identity
 287:             1             16  java.lang.Runtime
 288:             1             16  java.lang.String$CaseInsensitiveComparator
 289:             1             16  java.lang.System$2
 290:             1             16  java.lang.Terminator$1
 291:             1             16  java.lang.invoke.MemberName$Factory
 292:             1             16  java.lang.invoke.MethodHandleImpl$2
 293:             1             16  java.lang.invoke.MethodHandleImpl$3
 294:             1             16  java.lang.ref.Reference$1
 295:             1             16  java.lang.ref.Reference$Lock
 296:             1             16  java.lang.reflect.ReflectAccess
 297:             1             16  java.net.InetAddress$2
 298:             1             16  java.net.URLClassLoader$7
 299:             1             16  java.nio.Bits$1
 300:             1             16  java.nio.charset.CoderResult$1
 301:             1             16  java.nio.charset.CoderResult$2
 302:             1             16  java.security.ProtectionDomain$2
 303:             1             16  java.security.ProtectionDomain$JavaSecurityAccessImpl
 304:             1             16  java.util.Collections$EmptyIterator
 305:             1             16  java.util.Collections$EmptyList
 306:             1             16  java.util.Collections$EmptySet
 307:             1             16  java.util.Hashtable$EntrySet
 308:             1             16  java.util.ResourceBundle$Control
 309:             1             16  java.util.ResourceBundle$RBClassLoader$1
 310:             1             16  java.util.TimeZone$1
 311:             1             16  java.util.WeakHashMap$KeySet
 312:             1             16  java.util.concurrent.atomic.AtomicBoolean
 313:             1             16  java.util.jar.JarVerifier$3
 314:             1             16  java.util.jar.JavaUtilJarAccessImpl
 315:             1             16  java.util.zip.ZipFile$1
 316:             1             16  jdk.net.ExtendedSocketOptions$PlatformSocketOptions
 317:             1             16  sun.misc.ASCIICaseInsensitiveComparator
 318:             1             16  sun.misc.FloatingDecimal$1
 319:             1             16  sun.misc.Launcher
 320:             1             16  sun.misc.Launcher$BootClassPathHolder$1
 321:             1             16  sun.misc.Launcher$Factory
 322:             1             16  sun.misc.Perf
 323:             1             16  sun.misc.Unsafe
 324:             1             16  sun.net.spi.DefaultProxySelector
 325:             1             16  sun.net.www.protocol.file.Handler
 326:             1             16  sun.reflect.DelegatingMethodAccessorImpl
 327:             1             16  sun.reflect.ReflectionFactory
 328:             1             16  sun.util.calendar.Gregorian
 329:             1             16  sun.util.calendar.ZoneInfoFile$1
 330:             1             16  sun.util.calendar.ZoneInfoFile$Checksum
 331:             1             16  sun.util.locale.provider.AuxLocaleProviderAdapter$NullProvider
 332:             1             16  sun.util.locale.provider.JRELocaleProviderAdapter$1
 333:             1             16  sun.util.locale.provider.SPILocaleProviderAdapter
 334:             1             16  sun.util.locale.provider.TimeZoneNameUtility$TimeZoneNameGetter
 335:             1             16  sun.util.resources.LocaleData
 336:             1             16  sun.util.resources.LocaleData$LocaleDataResourceBundleControl
Total         25196        3662360
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