[Building Sakai] memory leaks
Charles Hedrick
hedrick at rutgers.edu
Thu Jun 24 09:58:31 PDT 2010
Not currently. There are several tools that use ZIP.
On Jun 24, 2010, at 12:53 PM, Ian Boston wrote:
> Also, are you running search? That uses zip.
>
> Sent from my iPhone
>
> On 24 Jun 2010, at 17:30, Charles Hedrick <hedrick at rutgers.edu> wrote:
>
>> We currently have to restart Sakai every week or two because it keeps growing. There are obviously memory leaks.
>>
>> I just took a look at memory. It looks to me like there are many different leaks. I'm not sure quite how to go about fixing them, but you can get a sense of where they are from the following histogram. This shows count and total size. It's pretty clear that the highest numbers are from the SSL code. There's other reasons to suspect problems in Tomcat's SSL code. We'll be doing SSL in our load balancers shortly, so that problem will go away. But I don't think that's all. There's pretty clearly problems in site, in something that handles ZIP files, and in many other places.
>>
>> This system is in production, so some of the data is OK, but not the ones with the higher counts.
>>
>> Total 78148953 6582836480
>> 1: 10022518 1436391880 [C
>> 5: 9195700 367828000 java.lang.String
>> 2: 6762941 885844368 [B
>> 3: 3438670 393934056 [Ljava.util.Hashtable$Entry;
>> 6: 3146040 201346560 java.util.Hashtable
>> 9: 3142573 175984088 java.lang.ref.SoftReference
>> 10: 2919478 140134944 sun.misc.CacheEntry
>> 8: 2786230 178318720 java.lang.ref.Finalizer
>> 18: 2647722 63545328 com.sun.net.ssl.internal.ssl.SessionId
>> 14: 2647236 84712448 [Ljava.security.cert.X509Certificate;
>> 4: 2647228 381200832 com.sun.net.ssl.internal.ssl.SSLSessionImpl
>> 15: 2647226 84711232 com.sun.crypto.provider.TlsMasterSecretGenerator$TlsMasterSecretKey
>> 11: 1260292 135339520 [Ljava.lang.Object;
>> 22: 1115565 53547120 java.util.HashMap$Entry
>> 24: 1069542 51338016 java.util.Hashtable$Entry
>> 25: 1041137 49974576 java.util.concurrent.locks.ReentrantLock$NonfairSync
>> 20: 1022022 56829568 [Ljava.util.concurrent.ConcurrentHashMap$HashEntry;
>> 26: 1019442 48933216 java.util.concurrent.ConcurrentHashMap$Segment
>> 27: 992537 47641776 java.util.concurrent.ConcurrentHashMap$HashEntry
>> 7: 845460 195293976 [I
>> 12: 695124 115690952 <constMethodKlass>
>> 16: 695124 83429776 <methodKlass>
>> 36: 453404 18136160 java.util.ArrayList
>> 30: 433529 23596112 <symbolKlass>
>> 52: 411718 9881232 java.lang.Integer
>> 44: 401958 12862656 org.sakaiproject.util.BaseResourcePropertiesEdit
>> 29: 395494 28971360 [Ljava.lang.String;
>> 17: 394749 78172744 [Ljava.util.HashMap$Entry;
>> 45: 381381 12204192 java.lang.StringBuilder
>> 41: 355742 14229680 net.sf.cglib.asm.Edge
>> 54: 351391 9222864 [Ljava.lang.Class;
>> 39: 282949 15845144 java.util.HashMap$KeyIterator
>> 38: 278886 17848704 java.util.HashMap
>> 33: 276964 19941408 java.util.Properties
>> 49: 275579 11023160 javax.servlet.jsp.tagext.TagAttributeInfo
>> 50: 271020 10840800 org.sakaiproject.site.impl.ResourceVector
>> 28: 267289 32074680 org.sakaiproject.site.impl.BaseToolConfiguration
>> 60: 258599 8275168 java.util.Collections$SynchronizedSet
>> 81: 243828 5851872 java.util.Hashtable$EntrySet
>> 31: 232013 22273248 net.sf.ehcache.Element
>> 34: 226282 19912816 org.sakaiproject.site.impl.BaseSitePage
>> 57: 182797 8774256 java.lang.ref.WeakReference
>> 74: 158521 6340840 org.sakaiproject.authz.impl.BaseMember
>> 75: 156916 6276640 java.util.Vector
>> 76: 154055 6162200 java.util.AbstractList$Itr
>> 48: 153739 11069208 net.sf.cglib.asm.Item
>> 98: 148329 3559896 java.lang.Long
>> 55: 143827 9204928 nu.xom.Attribute
>> 51: 136940 10194768 [S
>> 71: 134415 6451920 org.jdom.ContentList
>> 58: 134393 8601152 org.jdom.Element
>> 72: 134393 6450864 org.jdom.AttributeList
>> 68: 132970 6707088 [Z
>> 32: 131852 20041504 java.lang.reflect.Method
>> 47: 126367 11120296 net.sf.cglib.asm.Label
>> 95: 125425 4013600 org.sakaiproject.time.impl.MyTime
>> 67: 125315 7017640 java.nio.HeapCharBuffer
>> 131: 120836 1933376 java.lang.Object
>> 56: 115801 8889528 [[I
>> 73: 114671 6421576 java.nio.HeapByteBuffer
>> 77: 109229 6116824 org.hibernate.cache.CacheKey
>> 101: 106646 3412672 java.util.Date
>> 113: 105443 2530632 java.util.HashMap$KeySet
>> 66: 97094 7040792 [Lorg.jdom.Content;
>> 46: 93774 11252880 sun.util.calendar.Gregorian$Date
>> 42: 93525 14215800 java.util.GregorianCalendar
>> 105: 90927 2909664 nu.xom.Text
>> 107: 88059 2817888 org.jdom.Text
>> 108: 87413 2797216 java.lang.StringBuffer
>> 40: 85303 15695752 java.lang.Class
>> 110: 85078 2722496 org.sakaiproject.util.DirectRefreshDelivery
>> 61: 83091 7976736 java.text.DecimalFormatSymbols
>> 83: 82719 5294016 java.text.DigitList
>> 37: 82710 17865360 java.text.DecimalFormat
>> 13: 82688 90866640 <constantPoolKlass>
>> 19: 82688 62673832 <instanceKlassKlass>
>> 63: 82458 7915968 java.text.DateFormatSymbols
>> 59: 82448 8574592 java.text.SimpleDateFormat
>> 85: 77441 4956224 java.util.LinkedHashMap$Entry
>> 102: 77048 3081920 java.util.Stack
>> 132: 77032 1848768 java.util.HashSet
>> 86: 74716 4781824 org.apache.velocity.runtime.parser.Token
>> 70: 73914 6504432 org.apache.jasper.compiler.Mark
>> 65: 73556 7061376 nu.xom.Element
>> 104: 73546 2915720 [Lnu.xom.Attribute;
>> 23: 68788 53419584 <constantPoolCacheKlass>
>> 92: 66765 4272960 org.apache.tomcat.util.buf.ByteChunk
>> 97: 64043 3586408 org.apache.tomcat.util.buf.CharChunk
>> 53: 63512 9679824 [Ljava.util.concurrent.ConcurrentHashMap$Segment;
>> 88: 63512 4572864 java.util.concurrent.ConcurrentHashMap
>> 64: 62563 7507560 java.lang.reflect.Constructor
>> 84: 62299 4983920 org.apache.tomcat.util.buf.MessageBytes
>> 80: 61431 5897376 java.beans.MethodDescriptor
>> 93: 58548 4215456 java.util.WeakHashMap$Entry
>> 89: 57876 4543920 [[B
>> 99: 55099 3526336 org.apache.velocity.runtime.parser.Token
>> 91: 54931 4394480 java.util.LinkedHashMap
>> 129: 49725 1989000 org.sakaiproject.metaobj.shared.model.IdImpl
>> 69: 49034 6668624 org.sakaiproject.user.impl.BaseUserDirectoryService$BaseUserEdit
>> 146: 45239 1447648 com.sun.net.ssl.internal.ssl.SecureKey
>> 82: 45091 5771648 org.apache.jasper.compiler.Node$TemplateText
>> 109: 43034 2754176 org.apache.velocity.runtime.parser.Token
>> 103: 40604 2923488 org.apache.catalina.loader.ResourceEntry
>> 112: 36777 2647944 org.apache.jasper.compiler.Node$JspAttribute
>> 137: 36582 1755936 antlr.ANTLRHashString
>> 117: 36155 2313920 com.sun.tools.javac.zip.ZipFileIndexEntry
>> 118: 36155 2313920 com.sun.tools.javac.zip.ZipFileIndexEntry
>> 119: 36155 2313920 com.sun.tools.javac.zip.ZipFileIndexEntry
>> 120: 36155 2313920 com.sun.tools.javac.zip.ZipFileIndexEntry
>> 121: 36155 2313920 com.sun.tools.javac.zip.ZipFileIndexEntry
>> 122: 36155 2313920 com.sun.tools.javac.zip.ZipFileIndexEntry
>> 87: 36143 4626304 java.beans.PropertyDescriptor
>> 43: 35590 13951280 com.mysql.jdbc.JDBC4PreparedStatement
>> 100: 35590 3416640 com.mysql.jdbc.PreparedStatement$ParseInfo
>> 186: 35215 845160 java.util.HashMap$EntrySet
>> 90: 35012 4481536 org.sakaiproject.content.impl.BaseContentService$BaseCollectionEdit
>> 123: 34653 2217792 java.util.Hashtable$Enumerator
>> 149: 34364 1374560 com.mysql.jdbc.Buffer
>> 115: 33371 2402712 org.hibernate.hql.ast.tree.Node
>> 157: 31792 1271680 org.apache.jasper.compiler.Node$Nodes
>> 78: 31467 6041664 com.mysql.jdbc.Field
>> 128: 31098 1990272 java.util.TreeMap$Entry
>> 140: 30905 1730680 java.security.MessageDigest$Delegate
>> 130: 30454 1949056 net.sf.cglib.asm.Handler
>> 161: 30005 1200200 java.util.LinkedList$Entry
>> 62: 28415 7956200 com.mysql.jdbc.JDBC4ResultSet
>> 180: 28415 933696 [Lcom.mysql.jdbc.Field;
>> 138: 27298 1747072 org.apache.velocity.runtime.parser.Token
>> 212: 26567 637608 java.lang.Short
>> 185: 26497 847904 java.io.ByteArrayOutputStream
>> 213: 26381 633144 sun.reflect.DelegatingConstructorAccessorImpl
>> 35: 25721 18223944 <methodDataKlass>
>> 188: 25571 818272 java.util.regex.Pattern$Single
>> 158: 25554 1226592 java.util.regex.Pattern$Curly
>> 216: 25313 607512 java.util.concurrent.ConcurrentHashMap$EntrySet
>> 191: 24860 795520 org.xml.sax.helpers.AttributesImpl
>> 192: 24542 785344 java.io.File
>> 162: 24537 1177776 com.sun.org.apache.xerces.internal.xni.QName
>> 176: 24455 978200 sun.reflect.NativeConstructorAccessorImpl
>> 181: 23646 929872 [Lorg.apache.velocity.runtime.parser.node.Node;
>> 145: 22702 1452928 org.apache.velocity.runtime.parser.Token
>> 94: 22369 4115896 org.sakaiproject.site.impl.BaseSite
>> 147: 22042 1410688 org.apache.velocity.runtime.parser.Token
>> 239: 21695 520680 java.util.concurrent.locks.ReentrantLock
>> 241: 21534 516816 org.apache.jasper.compiler.Node$ChildInfo
>> 79: 21522 6026160 org.apache.jasper.compiler.Node$CustomTag
>> 242: 21522 516528 javax.servlet.jsp.tagext.TagData
>> 127: 21509 2064864 org.springframework.beans.PropertyValue
>> 243: 21497 515928 org.sakaiproject.util.EnumerationIterator
>> 165: 20687 1158472 java.lang.ThreadLocal$ThreadLocalMap$Entry
>> 125: 20520 2134080 com.mysql.jdbc.ConnectionPropertiesImpl$BooleanConnectionProperty
>> 201: 20248 714224 [Lorg.hibernate.type.Type;
>> 136: 20031 1762728 sun.security.provider.SHA
>> 189: 20007 800280 java.util.LinkedList
>> 258: 19530 468720 sun.reflect.DelegatingMethodAccessorImpl
>> 135: 18892 1813632 org.hibernate.cache.QueryKey
>> 111: 18865 2657392 [Ljavax.servlet.jsp.tagext.TagAttributeInfo;
>> 126: 18865 2112880 javax.servlet.jsp.tagext.TagInfo
>> 265: 18865 453192 [Ljavax.servlet.jsp.tagext.TagVariableInfo;
>> 196: 18811 744408 [Lorg.apache.jasper.compiler.Node$JspAttribute;
>> 151: 18366 1322352 javax.faces.component.UIComponentBase$AttributesMap
>> 152: 18366 1322352 javax.faces.component.UIComponentBase$FacetsMap
>> 182: 18366 881568 javax.faces.component.UIComponentBase$ChildrenList
>> 274: 18108 434592 java.lang.Boolean
>> 183: 18098 868704 com.sun.faces.el.ValueBindingImpl
>> 134: 17504 1820416 sun.reflect.DelegatingClassLoader
>> 141: 17441 1674336 java.util.regex.Pattern
>> 205: 16834 673360 java.util.regex.Pattern$6
>> 237: 16360 523520 java.util.regex.Pattern$Start
>> 209: 15931 646696 [Lorg.apache.velocity.runtime.parser.node.Node;
>> 247: 15798 505536 org.sakaiproject.util.BaseResourcePropertiesEdit
>> 150: 15491 1363208 java.util.regex.Matcher
>> 248: 15365 491680 java.util.regex.Pattern$Ctype
>> 124: 15274 2149448 [[I
>> 252: 15172 485504 java.util.concurrent.CopyOnWriteArrayList
>> 220: 14971 598840 com.mysql.jdbc.ByteArrayRow
>> 221: 14820 592800 java.security.Provider$ServiceKey
>> 293: 14737 353688 org.sakaiproject.tool.impl.MyNonPortableSession
>> 116: 14704 2323224 [Lnu.xom.Node;
>> 156: 14474 1273712 org.sakaiproject.memory.impl.MultiRefCacheImpl$MultiRefCacheEntry
>> 223: 14386 575440 org.sakaiproject.entity.impl.ReferenceVectorComponent
>> 167: 14114 1129120 sun.util.calendar.ZoneInfo
>> 206: 14018 672864 com.mysql.jdbc.RowDataStatic
>> 271: 13613 435616 net.sf.cglib.asm.ByteVector
>> 389: 13463 215408 org.sakaiproject.util.EmptyIterator
>> 96: 13326 3944496 net.sf.cglib.asm.MethodWriter
>> 148: 13218 1374672 javax.crypto.Cipher
>> 197: 13168 737408 org.jdom.Attribute
>> 215: 12977 622896 com.sun.net.ssl.internal.ssl.MAC
>> 240: 12977 519080 com.sun.net.ssl.internal.ssl.CipherBox
>> 179: 12976 934272 javax.crypto.Mac
>> 316: 12686 304464 org.apache.jasper.compiler.ELNode$ELText
>> 153: 12682 1318928 org.sakaiproject.announcement.impl.BaseAnnouncementService$BaseAnnouncementMessageHeaderEdit
>> 175: 12604 1008320 org.sakaiproject.announcement.impl.BaseAnnouncementService$BaseAnnouncementMessageEdit
>> 202: 12481 698936 java.io.ObjectStreamClass$WeakClassKey
>> 204: 12100 677600 java.util.HashMap$ValueIterator
>> 253: 12077 483080 java.sql.Timestamp
>> 335: 12000 288000 java.util.regex.Pattern$All
>> 195: 11855 758720 java.util.concurrent.ConcurrentHashMap$EntryIterator
>> 229: 11558 554784 org.apache.tomcat.util.http.MimeHeaderField
>> 254: 11532 480032 [Lorg.apache.velocity.runtime.parser.node.Node;
>> 198: 11475 734400 java.util.concurrent.ConcurrentHashMap$KeyIterator
>> 232: 11472 550656 org.apache.commons.collections.iterators.IteratorChain
>> 345: 11472 275328 org.sakaiproject.util.IteratorEnumeration
>> 262: 11460 458400 org.springframework.beans.MutablePropertyValues
>> 287: 11460 366720 org.springframework.beans.factory.config.ConstructorArgumentValues
>> 346: 11460 275040 org.springframework.beans.factory.support.MethodOverrides
>> 199: 11277 721728 org.apache.velocity.runtime.parser.Token
>> 164: 11226 1167504 [Ljava.util.regex.Pattern$GroupHead;
>> 312: 11031 306896 [Lorg.apache.catalina.LifecycleListener;
>> 295: 10944 350208 java.util.regex.Pattern$TreeInfo
>> 177: 10874 956912 sun.security.provider.MD5
>> 160: 10788 1208256 org.sakaiproject.tool.impl.MyLittleSession
>> 168: 10781 1121224 java.net.URL
>> 299: 10739 343648 nu.xom.Comment
>> 301: 10451 334432 org.sakaiproject.user.impl.AuthenticationCache$AuthenticationRecord
>> 169: 10416 1083264 uk.org.ponder.rsf.template.XMLLump
>> 250: 10165 487920 java.util.Locale
>> 306: 9970 319040 org.sakaiproject.util.Authentication
>> 214: 9747 623808 [Lorg.jdom.Attribute;
>> 375: 9696 232704 java.io.FileDescriptor
>> 263: 9525 457200 org.apache.catalina.LifecycleEvent
>> 315: 9525 304680 [Lorg.apache.catalina.Container;
>> 170: 9514 1065568 org.sakaiproject.time.impl.BasicTimeService$LocalTzFormat
>> 317: 9501 304032 java.util.regex.Pattern$GroupTail
>> 218: 9442 604288 org.sakaiproject.user.impl.BasePreferencesService$BasePreferences
>> 319: 9372 299904 java.util.regex.Pattern$SliceU
>> 273: 9057 434736 org.sakaiproject.entity.api.EntityPropertyNotDefinedException
>> 292: 8861 354440 sun.reflect.NativeMethodAccessorImpl
>> 194: 8679 763752 org.apache.velocity.runtime.parser.node.ASTText
>> 159: 8517 1226448 org.apache.velocity.runtime.parser.node.ASTReference
>> 234: 8313 532032 org.apache.velocity.runtime.parser.Token
>> 303: 8223 328920 org.springframework.beans.BeanWrapperImpl$PropertyTokenHolder
>> 357: 8159 261088 org.apache.velocity.util.introspection.IntrospectionCacheData
>> 172: 8127 1040256 java.lang.reflect.Field
>> 307: 7908 316320 org.springframework.beans.factory.config.RuntimeBeanReference
>> 305: 7787 319856 [Lorg.apache.velocity.runtime.parser.node.Node;
>> 282: 7741 399800 [Ljava.io.Serializable;
>> 249: 7653 489792 com.sun.net.ssl.internal.ssl.OutputRecord
>> 155: 7649 1285032 org.sakaiproject.content.impl.BaseContentService$BaseResourceEdit
>> 417: 7636 183264 java.util.LinkedHashSet
>> 370: 7591 242912 java.util.regex.Pattern$GroupHead
>> 219: 7498 599840 net.sf.cglib.asm.FieldWriter
>> 320: 7489 299560 javax.faces.component.SavedState
>> 291: 7431 356688 com.mysql.jdbc.JDBC4DatabaseMetaData
>> 208: 7382 649616 org.apache.velocity.runtime.parser.node.ASTText
>> 294: 7333 351984 com.sun.crypto.provider.HmacCore
>> 257: 7324 468736 org.apache.velocity.runtime.parser.Token
>> 259: 7314 468096 org.apache.velocity.runtime.parser.Token
>> 222: 7265 581200 com.sun.net.ssl.internal.ssl.InputRecord
>> 203: 7257 696672 org.apache.commons.dbcp.DelegatingPreparedStatement
>> 106: 7254 2843568 com.mysql.jdbc.PreparedStatement
>> 280: 7254 401936 [Ljava.io.InputStream;
>> 377: 7244 231808 org.apache.commons.logging.impl.Log4JLogger
>> 429: 7241 173784 [Ljava.sql.ResultSet;
>> 211: 7207 644216 [[Ljava.lang.String;
>> 336: 7169 286760 org.apache.commons.pool.impl.CursorableLinkedList$Listable
>> 379: 7166 229312 org.apache.commons.pool.impl.GenericKeyedObjectPool$ObjectTimestampPair
>> 154: 7127 1311368 java.net.SocksSocketImpl
>> 264: 7117 455488 java.net.SocketInputStream
>> 380: 7101 227232 javax.management.ObjectName$Property
>> 338: 7057 282280 java.net.Inet4Address
>> 228: 7049 563920 org.apache.commons.dbcp.DelegatingResultSet
>> 381: 7043 225376 java.math.MutableBigInteger
>> 434: 7000 168000 java.text.ParsePosition
>> 143: 6964 1504224 com.mysql.jdbc.StatementImpl
>> 207: 6962 668352 org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper
>> 436: 6960 167040 [Ljava.sql.Statement;
>> 384: 6958 222656 org.apache.commons.pool.impl.GenericObjectPool$Latch
>> 343: 6927 277080 com.sun.crypto.provider.ARCFOURCipher
>> 166: 6874 1154832 org.springframework.beans.factory.support.GenericBeanDefinition
>> 251: 6769 487368 java.net.SocketOutputStream
>> 276: 6749 431936 org.apache.velocity.runtime.parser.Token
>> 348: 6749 272376 [Lorg.apache.velocity.runtime.parser.node.Node;
>> 210: 6715 644640 java.lang.Package
>> 163: 6640 1168640 java.io.ObjectStreamClass
>> 178: 6623 953712 org.apache.velocity.runtime.parser.node.ASTReference
>> 238: 6517 521360 org.sakaiproject.site.impl.BaseGroup
>> 142: 6503 1612744 com.sun.net.ssl.internal.ssl.SSLSocketImpl
>> 358: 6503 260120 com.sun.net.ssl.internal.ssl.AppInputStream
>> 359: 6503 260120 com.sun.net.ssl.internal.ssl.AppOutputStream
>> 399: 6502 208064 com.sun.net.ssl.internal.ssl.HandshakeHash
>> 227: 6451 567688 org.apache.velocity.runtime.parser.node.ASTText
>> 361: 6435 257400 net.sf.cglib.asm.Type
>> 279: 6384 408576 org.apache.velocity.runtime.parser.Token
>> 244: 6365 509200 org.sakaiproject.entity.impl.ReferenceComponent
>> 184: 6362 865232 org.etudes.jforum.entities.UserSession
>> 133: 6344 1827072 javax.faces.component.html.HtmlGraphicImage
>> 457: 6324 151776 org.apache.tomcat.util.net.jsse.JSSE14Support$Listener
>> 365: 6316 252640 org.springframework.beans.factory.config.TypedStringValue
>> 231: 6284 552992 org.hibernate.collection.PersistentSet
>> 297: 6188 346528 org.sakaiproject.tool.summarycalendar.ui.Day
>> 272: 6049 435528 com.sun.crypto.provider.SunJCE_f
>> 283: 6049 387136 com.sun.crypto.provider.SunJCE_k
>> 193: 5990 766720 org.hibernate.hql.ast.tree.IdentNode
>> 284: 5973 382272 org.apache.velocity.runtime.parser.Token
>> 174: 5897 1037872 org.springframework.beans.GenericTypeAwarePropertyDescriptor
>> 256: 5886 470880 java.util.TreeMap
>> 472: 5867 140808 com.sun.crypto.provider.HmacSHA1
>> 374: 5857 234280 com.sun.crypto.provider.SunJCE_c
>> 474: 5857 140568 com.sun.crypto.provider.AESCipher
>> 414: 5814 186048 com.sun.org.apache.xerces.internal.util.XMLStringBuffer
>> 245: 5765 507320 org.hibernate.stat.QueryStatistics
>> 418: 5687 181984 java.util.regex.Pattern$Slice
>> 349: 5671 272208 org.hibernate.cache.entry.CacheEntry
>> 308: 5643 316008 com.sun.crypto.provider.SslMacCore
>> 352: 5614 269472 org.apache.commons.lang.text.StrBuilder
>> 424: 5561 177952 net.sf.cglib.core.Signature
>> 190: 5525 795600 org.apache.velocity.runtime.parser.node.ASTReference
>> 225: 5510 573040 com.mysql.jdbc.ConnectionPropertiesImpl$StringConnectionProperty
>> 270: 5505 440400 org.sakaiproject.util.ResourceLoader
>> 236: 5503 528288 org.sakaiproject.metaobj.security.impl.sakai.AgentWrapper
>> 427: 5471 175072 com.sun.org.apache.xerces.internal.xni.XMLString
>> 350: 5285 271192 [Ljava.util.regex.Pattern$Node;
>> 364: 5285 253680 java.util.regex.Pattern$Branch
>> 501: 5285 126840 java.util.regex.Pattern$BranchConn
>> 504: 5252 126048 com.sun.crypto.provider.SslMacCore$SslMacSHA1
>> 302: 5186 331904 [Ljavax.servlet.jsp.tagext.Tag;
>> 437: 5186 165952 org.apache.jasper.runtime.TagHandlerPool
>> 235: 5091 529464 uk.org.ponder.rsf.template.XMLLump
>> 400: 5073 208008 [Lorg.apache.velocity.runtime.parser.node.Node;
>> 441: 5065 162080 org.springframework.aop.framework.AdvisedSupport$MethodCacheKey
>> 442: 5061 161952 org.apache.jasper.compiler.ELNode$Nodes
>> 289: 4980 358560 javax.faces.component.UIComponentBase$FacetsMap
>> 290: 4980 358560 javax.faces.component.UIComponentBase$AttributesMap
>> 372: 4980 239040 javax.faces.component.UIComponentBase$ChildrenList
>> 405: 4957 198280 java.util.regex.Pattern$8
>> 230: 4940 553280 com.mysql.jdbc.ConnectionPropertiesImpl$IntegerConnectionProperty
>> 275: 4928 433664 org.springframework.core.MethodParameter
>> 351: 4827 270312 java.util.HashMap$EntryIterator
>> 409: 4791 191640 org.apache.velocity.runtime.parser.Parser$JJCalls
>> 314: 4774 305536 org.apache.velocity.runtime.parser.Token
>> 356: 4710 263760 java.io.ObjectStreamField
>> 382: 4677 224496 java.math.BigInteger
>> 537: 4650 111600 java.util.HashMap$Values
>> 171: 4586 1063952 org.springframework.beans.factory.support.RootBeanDefinition
>> 420: 4538 181520 org.jgroups.stack.IpAddress
>> 200: 4491 718560 javax.faces.component.html.HtmlOutputText
>> 398: 4418 212064 org.apache.commons.collections.SequencedHashMap$Entry
>> 260: 4414 459056 uk.org.ponder.rsf.template.XMLLump
>> 261: 4411 458744 uk.org.ponder.rsf.template.XMLLump
>> 340: 4373 279872 org.apache.commons.collections.ReferenceMap$SoftRef
>> 296: 4353 348240 org.apache.velocity.runtime.parser.node.ASTExpression
>> 478: 4304 137728 java.util.jar.Attributes$Name
>> 480: 4281 136992 org.apache.velocity.util.introspection.Info
>> 267: 4267 443768 uk.org.ponder.rsf.template.XMLLump
>> 269: 4245 441480 org.hibernate.hql.ast.tree.ParameterNode
>> 484: 4232 135424 org.hibernate.hql.ast.ParameterTranslationsImpl$ParameterInfo
>> 355: 4123 263872 org.apache.velocity.runtime.parser.Token
>> 496: 4075 130400 sun.security.jca.GetInstance$Instance
>> 704: 4017 64272 org.springframework.aop.framework.Cglib2AopProxy$SerializableNoOp
>> 187: 4016 841624 [Ljava.beans.PropertyDescriptor;
>> 362: 4006 256384 java.io.ObjectStreamClass$FieldReflectorKey
>> 567: 3969 95256 java.lang.Float
>> 500: 3965 126880 com.sun.faces.el.impl.PropertySuffix
>> 570: 3959 95016 java.lang.Character
>> 226: 3949 568656 org.sakaiproject.tool.impl.MySession
>> 571: 3949 94776 org.apache.commons.lang.mutable.MutableLong
>> 503: 3947 126304 org.apache.log4j.CategoryKey
>> 278: 3940 409760 edu.rutgers.sakai.user.RutgersLDAPDirectoryProvider$Info
>> 298: 3911 344168 org.apache.velocity.runtime.parser.node.ASTIdentifier
>> 576: 3910 93840 java.util.concurrent.ConcurrentHashMap$KeySet
>> 580: 3877 93048 java.lang.Byte
>> 344: 3847 276984 org.hibernate.loader.DefaultEntityAliases
>> 300: 3839 337832 org.apache.velocity.runtime.parser.node.ASTText
>> 368: 3832 245248 org.apache.velocity.runtime.parser.Token
>> 416: 3826 183648 net.sf.cglib.core.ClassEmitter$FieldInfo
>> 456: 3822 152880 org.apache.velocity.runtime.parser.node.PropertyExecutor
>> 421: 3781 181488 java.util.AbstractList$ListItr
>> 277: 3744 419328 org.apache.velocity.runtime.parser.node.ASTStringLiteral
>> 403: 3711 202680 [Ljavax.management.ObjectName$Property;
>> 328: 3664 293120 com.sun.tools.javac.zip.ZipFileIndex$DirectoryEntry
>> 329: 3664 293120 com.sun.tools.javac.zip.ZipFileIndex$DirectoryEntry
>> 330: 3664 293120 com.sun.tools.javac.zip.ZipFileIndex$DirectoryEntry
>> 331: 3664 293120 com.sun.tools.javac.zip.ZipFileIndex$DirectoryEntry
>> 332: 3664 293120 com.sun.tools.javac.zip.ZipFileIndex$DirectoryEntry
>> 333: 3664 293120 com.sun.tools.javac.zip.ZipFileIndex$DirectoryEntry
>> 463: 3637 145480 org.hibernate.param.NamedParameterSpecification
>> 428: 3634 174432 org.hibernate.engine.query.NamedParameterDescriptor
>> 529: 3609 115488 java.util.regex.Pattern$BitClass
>> 597: 3607 86568 com.sun.faces.el.impl.NamedValue
>> 532: 3579 114528 com.sun.faces.el.impl.ComplexValue
>> 360: 3577 257544 org.apache.tomcat.util.http.ServerCookie
>> 255: 3524 474984 [Ljavax.management.modelmbean.ModelMBeanAttributeInfo;
>> 246: 3511 505584 org.apache.velocity.runtime.parser.node.ASTReference
>> 385: 3471 222144 org.apache.velocity.runtime.parser.Token
>> 387: 3461 221504 org.apache.velocity.runtime.parser.Token
>> 139: 3412 1737440 [Ljava.beans.MethodDescriptor;
>> 321: 3401 299288 org.apache.velocity.runtime.parser.node.ASTIdentifier
>> 371: 3355 241560 javax.servlet.http.Cookie
>> 544: 3354 107328 org.apache.velocity.util.introspection.IntrospectionCacheData
>> 353: 3351 268080 java.beans.BeanDescriptor
>> 391: 3351 214464 java.beans.GenericBeanInfo
>> 483: 3315 135592 [Lorg.apache.velocity.runtime.parser.node.Node;
>> 447: 3295 158160 com.sun.org.apache.xerces.internal.util.SymbolTable$Entry
>> 449: 3278 157344 com.sun.faces.el.ValueBindingImpl
>> 334: 3275 288200 org.hibernate.hql.ast.tree.SqlNode
>> 309: 3272 314112 org.apache.velocity.runtime.parser.node.ASTMethod
>> 497: 3223 128920 org.apache.velocity.runtime.parser.node.PropertyExecutor
>>
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