org.xmlBlaster.test.classtest.queue
Class EntrySize

java.lang.Object
  org.xmlBlaster.test.classtest.queue.EntrySize

public class EntrySize
extends java.lang.Object

Helper to find out size of Queue entries. Use it together with a profiling tool.

See Also:

MsgQueueUpdateEntry, MsgQueueHistoryEntry, MsgUnitWrapper

Field Summary

protected ServerScope	glob
private static java.util.logging.Logger	log

Constructor Summary

EntrySize(ServerScope glob)

Method Summary

void	connectEntry() Object creation RAM of MsgQueueConnectEntry without payload (the payload here is additional 456 bytes):
void	historyEntry() Object creation RAM without payload:
static void	main(java.lang.String[] args) java org.xmlBlaster.test.classtest.queue.EntrySize
void	msgUnitWrapperEntry() Object creation RAM without payload (the payload here is additional 78 bytes):
void	publishEntry() Object creation RAM without payload (the payload here is additional 23 bytes):
void	subscribeEntry() Object creation RAM without payload (the payload here is additional 23 bytes):
void	updateEntry() Sun JDK 1.4.1 b19 / Linux 2.4.19: 179 bytes/entry IBM JDK 1.3.1 / Linux 2.4.19 : 172 bytes/entry Created objects: - Timestamp - MsgQueueUpdateEntry

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

glob

protected ServerScope glob

log

private static java.util.logging.Logger log

Constructor Detail

EntrySize

public EntrySize(ServerScope glob)

Method Detail

updateEntry

public void updateEntry()

Sun JDK 1.4.1 b19 / Linux 2.4.19: 179 bytes/entry IBM JDK 1.3.1 / Linux 2.4.19 : 172 bytes/entry Created objects: - Timestamp - MsgQueueUpdateEntry

historyEntry

public void historyEntry()

Object creation RAM without payload:

 Sun JDK 1.4.1 b19 / Linux 2.4.19: 176 bytes/entry
 IBM JDK 1.3.1 / Linux 2.4.19    : 164 bytes/entry
 Created objects:
 - Timestamp
 - MsgQueueUpdateEntry
 

msgUnitWrapperEntry

public void msgUnitWrapperEntry()

Object creation RAM without payload (the payload here is additional 78 bytes):

 Sun JDK 1.4.1 b19 / Linux 2.4.19: 3214 bytes/entry
 IBM JDK 1.3.1 / Linux 2.4.19    : 2920 bytes/entry

 Estimated calculation of used memory by one MsgUnitWrapper instance
 = Object memory + payload(=msgUnit.size())

 Where following objects need to be created:
 5 PropBoolean
 1 PropLong
 1 RcvTimestamp
 1 MsgQosData
 1 MsgKeyData
 1 MsgUnit
 1 MsgUnitWrapper
 

publishEntry

public void publishEntry()

Object creation RAM without payload (the payload here is additional 23 bytes):

 Sun JDK 1.4.1 b19 / Linux 2.4.19: 659 bytes/entry
 IBM JDK 1.3.1 / Linux 2.4.19    : 627 bytes/entry

 Estimated calculation of used memory by one MsgUnitWrapper instance
 = Object memory + payload(=msgUnit.size() here is 23 bytes)

 Where following objects need to be created:
 6 PropBoolean
 1 PropLong
 1 Timestamp
 1 MsgQosData
 1 MsgKeyData
 1 MsgUnit
 1 MsgQueuePublishEntry

 Performance: Most performance is consumed here for SAX parsing of key and qos
 

subscribeEntry

public void subscribeEntry()

Object creation RAM without payload (the payload here is additional 23 bytes):

 Sun JDK 1.4.1 b19 / Linux 2.4.19: 567 bytes/entry

 Where following objects need to be created:
 7 PropBoolean
 1 Timestamp
 1 QueryQosData
 1 SubscribeQos
 1 QueryKeyData
 1 SubscribeKey
 1 HistoryQos
 1 MsgQueueSubscribeEntry
 

connectEntry

public void connectEntry()

Object creation RAM of MsgQueueConnectEntry without payload (the payload here is additional 456 bytes):

 Sun JDK 1.4.1 b19 / Linux 2.4.19: 2400 bytes/entry

 Almost everything is consumed by the expensive ConnectQos object creation.
 6 PropBoolean
 5 PropLong
 4 PropString
 1 NodeId
 1 SessionName
 1 SecurityQos
 1 ConnectQos
 1 SessionQos
 1 MsgQueueConnectEntry
 1 QueueProperty
 1 PropInt
 1 ConnectQosData
 1 Timestamp

 The toXml() size is 456 bytes
 

main

public static void main(java.lang.String[] args)

  java org.xmlBlaster.test.classtest.queue.EntrySize