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From "Rahul Mourya (JIRA)" <axis-...@ws.apache.org>
Subject [jira] [Commented] (AXIS-2912) Axis 1.4 performance
Date Wed, 18 Nov 2015 11:17:11 GMT

    [ https://issues.apache.org/jira/browse/AXIS-2912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15010790#comment-15010790
] 

Rahul Mourya commented on AXIS-2912:
------------------------------------

Can we have any update on this issue. Just to add, based on the internal testing and below
link

http://www.javacodegeeks.com/2010/07/java-best-practices-dateformat-in.html

including a ThreadPool in CalendarSerializer.java and CalendarDeserializer.java for the DateFormat
instead of the current approach of synchronizing on a static object seems to improve the performance
drastically. Could you please have a look at the above mentioned link.

Regards
Rahul

> Axis 1.4 performance
> --------------------
>
>                 Key: AXIS-2912
>                 URL: https://issues.apache.org/jira/browse/AXIS-2912
>             Project: Axis
>          Issue Type: Bug
>          Components: Serialization/Deserialization
>    Affects Versions: 1.4
>         Environment: ***** Pivotal Values ***** 
>  Reported Version: 9.8
>  OSName: SUSE Linux Enterprise Server
>  OSVersion: 
>  Hardware: 
>  Environment: Any Operating System
> --------------------
>            Reporter: Rahul Mourya
>
> On serialization process we saw lots of threads blocked executing org.apache.axis.encoding.ser.CalendarSerializer.getValueAsString
(20 times in 5 dumps, 6 times max). This method seems to access to a static SimpleDateFormat
object in a synchronized block, so it's shaded for any thread serializing SOAP response. They
presume this code is used to serialize date attibutes on SOAP response. It is affecting the
overall performance while forming the SOAP response with the increase in the number of threads.

> Below is the thread stack for the blocked threads :
> =========================
> "qtp124606801-507" #507 prio=5 os_prio=0 tid=0x0000000000e44800 nid=0x6c84 waiting for
monitor entry [0x00002af16048c000]
>    java.lang.Thread.State: BLOCKED (on object monitor)
> 	at org.apache.axis.encoding.ser.CalendarSerializer.getValueAsString(CalendarSerializer.java:67)
> 	- waiting to lock <0x00000000a25f8c98> (a java.text.SimpleDateFormat)
> 	at org.apache.axis.encoding.ser.CalendarSerializer.serialize(CalendarSerializer.java:58)
> 	at org.apache.axis.encoding.SerializationContext.serializeActual(SerializationContext.java:1504)
> 	at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:980)
> 	at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:734)
> 	at org.apache.axis.encoding.ser.BeanSerializer.serialize(BeanSerializer.java:230)
> 	at org.apache.axis.encoding.SerializationContext.serializeActual(SerializationContext.java:1504)
> 	at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:980)
> 	at org.apache.axis.encoding.SerializationContext.outputMultiRefs(SerializationContext.java:1055)
> 	at org.apache.axis.message.SOAPBody.outputImpl(SOAPBody.java:145)
> 	at org.apache.axis.message.SOAPEnvelope.outputImpl(SOAPEnvelope.java:478)
> 	at org.apache.axis.message.MessageElement.output(MessageElement.java:1208)
> 	at org.apache.axis.SOAPPart.writeTo(SOAPPart.java:315)
> 	at org.apache.axis.SOAPPart.getAsString(SOAPPart.java:632)
> 	at org.apache.axis.handlers.SOAPMonitorHandler.invoke(SOAPMonitorHandler.java:69)
> 	at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
> 	at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
> 	at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
> 	at org.apache.axis.server.AxisServer.invoke(AxisServer.java:296)
> 	at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:699)
> .
> .(Thread stack skipped)
> ================================
> Could you please help providing some insight on it. Let me know if you need any further
details.
> Regards
> Rahul



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