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Posted to java-dev@axis.apache.org by "songdacheng (JIRA)" <ax...@ws.apache.org> on 2012/09/22 09:23:07 UTC
[jira] [Created] (AXIS-2878) 100% CPU hang when high pressure of
concurrent requests
songdacheng created AXIS-2878:
---------------------------------
Summary: 100% CPU hang when high pressure of concurrent requests
Key: AXIS-2878
URL: https://issues.apache.org/jira/browse/AXIS-2878
Project: Axis
Issue Type: Bug
Components: Basic Architecture
Affects Versions: 1.4
Environment: R2+, R3
Reporter: songdacheng
When we are doing the performace testing. we simulate high pressure of concurrent requests to invoke soap service. severals hours later, CPU will be 100% and can not be released when the pressure is stopped.
We check the stack log and have found several threads are locked at
java.util.WeakHashMap.getEntry(WeakHashMap.java:375)
java.util.WeakHashMap.containsKey(WeakHashMap.java:361)
org.apache.axis.handlers.soap.SOAPService.addSession(SOAPService.java:125)
org.apache.axis.providers.java.JavaProvider.getSessionServiceObject(JavaProvider.java:185)
org.apache.axis.providers.java.JavaProvider.getServiceObject(JavaProvider.java:100)
org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:287)
org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:454)
org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:700)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
Because WeakHashMap is not safe within concurrent threads so I doubt maybe there is a problem. I modify the method: addSession of SOAPService.java (org.apache.axis.handlers.soap)
add the 'synchronized ':
synchronized (map)
{
if (!(map.containsKey(session)))
{
map.put(session, null);
}
}
Then the cpu problem does not occur.
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[jira] [Commented] (AXIS-2878) 100% CPU hang when high pressure of
concurrent requests
Posted by "Hudson (JIRA)" <ax...@ws.apache.org>.
[ https://issues.apache.org/jira/browse/AXIS-2878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13461086#comment-13461086 ]
Hudson commented on AXIS-2878:
------------------------------
Integrated in axis-trunk #150 (See [https://builds.apache.org/job/axis-trunk/150/])
Reverted r256500 (AXIS-524) and r348194 (AXIS-2314; fixing a regression caused by r256500). See the comments in AXIS-524 for the rationale of this revert.
This should fix AXIS-2878. (Revision 1388756)
Result = SUCCESS
veithen :
Files :
* /axis/axis1/java/trunk/axis/src/main/java/org/apache/axis/deployment/wsdd/WSDDUndeployment.java
* /axis/axis1/java/trunk/axis/src/main/java/org/apache/axis/handlers/soap/SOAPService.java
* /axis/axis1/java/trunk/axis/src/main/java/org/apache/axis/providers/java/JavaProvider.java
> 100% CPU hang when high pressure of concurrent requests
> -------------------------------------------------------
>
> Key: AXIS-2878
> URL: https://issues.apache.org/jira/browse/AXIS-2878
> Project: Axis
> Issue Type: Bug
> Components: Basic Architecture
> Affects Versions: 1.4
> Environment: R2+, R3
> Reporter: songdacheng
> Assignee: Andreas Veithen
>
> When we are doing the performace testing. we simulate high pressure of concurrent requests to invoke soap service. severals hours later, CPU will be 100% and can not be released when the pressure is stopped.
> We check the stack log and have found several threads are locked at
> java.util.WeakHashMap.getEntry(WeakHashMap.java:375)
> java.util.WeakHashMap.containsKey(WeakHashMap.java:361)
> org.apache.axis.handlers.soap.SOAPService.addSession(SOAPService.java:125)
> org.apache.axis.providers.java.JavaProvider.getSessionServiceObject(JavaProvider.java:185)
> org.apache.axis.providers.java.JavaProvider.getServiceObject(JavaProvider.java:100)
> org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:287)
> org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
> org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
> org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
> org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:454)
> org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
> org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:700)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
> org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
> Because WeakHashMap is not safe within concurrent threads so I doubt maybe there is a problem. I modify the method: addSession of SOAPService.java (org.apache.axis.handlers.soap)
> add the 'synchronized ':
> synchronized (map)
> {
> if (!(map.containsKey(session)))
> {
> map.put(session, null);
> }
> }
> Then the cpu problem does not occur.
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[jira] [Assigned] (AXIS-2878) 100% CPU hang when high pressure of
concurrent requests
Posted by "Andreas Veithen (JIRA)" <ax...@ws.apache.org>.
[ https://issues.apache.org/jira/browse/AXIS-2878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andreas Veithen reassigned AXIS-2878:
-------------------------------------
Assignee: Andreas Veithen
> 100% CPU hang when high pressure of concurrent requests
> -------------------------------------------------------
>
> Key: AXIS-2878
> URL: https://issues.apache.org/jira/browse/AXIS-2878
> Project: Axis
> Issue Type: Bug
> Components: Basic Architecture
> Affects Versions: 1.4
> Environment: R2+, R3
> Reporter: songdacheng
> Assignee: Andreas Veithen
>
> When we are doing the performace testing. we simulate high pressure of concurrent requests to invoke soap service. severals hours later, CPU will be 100% and can not be released when the pressure is stopped.
> We check the stack log and have found several threads are locked at
> java.util.WeakHashMap.getEntry(WeakHashMap.java:375)
> java.util.WeakHashMap.containsKey(WeakHashMap.java:361)
> org.apache.axis.handlers.soap.SOAPService.addSession(SOAPService.java:125)
> org.apache.axis.providers.java.JavaProvider.getSessionServiceObject(JavaProvider.java:185)
> org.apache.axis.providers.java.JavaProvider.getServiceObject(JavaProvider.java:100)
> org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:287)
> org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
> org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
> org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
> org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:454)
> org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
> org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:700)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
> org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
> Because WeakHashMap is not safe within concurrent threads so I doubt maybe there is a problem. I modify the method: addSession of SOAPService.java (org.apache.axis.handlers.soap)
> add the 'synchronized ':
> synchronized (map)
> {
> if (!(map.containsKey(session)))
> {
> map.put(session, null);
> }
> }
> Then the cpu problem does not occur.
--
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[jira] [Resolved] (AXIS-2878) 100% CPU hang when high pressure of
concurrent requests
Posted by "Andreas Veithen (JIRA)" <ax...@ws.apache.org>.
[ https://issues.apache.org/jira/browse/AXIS-2878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andreas Veithen resolved AXIS-2878.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.4.1
> 100% CPU hang when high pressure of concurrent requests
> -------------------------------------------------------
>
> Key: AXIS-2878
> URL: https://issues.apache.org/jira/browse/AXIS-2878
> Project: Axis
> Issue Type: Bug
> Components: Basic Architecture
> Affects Versions: 1.4
> Environment: R2+, R3
> Reporter: songdacheng
> Assignee: Andreas Veithen
> Fix For: 1.4.1
>
>
> When we are doing the performace testing. we simulate high pressure of concurrent requests to invoke soap service. severals hours later, CPU will be 100% and can not be released when the pressure is stopped.
> We check the stack log and have found several threads are locked at
> java.util.WeakHashMap.getEntry(WeakHashMap.java:375)
> java.util.WeakHashMap.containsKey(WeakHashMap.java:361)
> org.apache.axis.handlers.soap.SOAPService.addSession(SOAPService.java:125)
> org.apache.axis.providers.java.JavaProvider.getSessionServiceObject(JavaProvider.java:185)
> org.apache.axis.providers.java.JavaProvider.getServiceObject(JavaProvider.java:100)
> org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:287)
> org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
> org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
> org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
> org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:454)
> org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
> org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:700)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
> org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
> Because WeakHashMap is not safe within concurrent threads so I doubt maybe there is a problem. I modify the method: addSession of SOAPService.java (org.apache.axis.handlers.soap)
> add the 'synchronized ':
> synchronized (map)
> {
> if (!(map.containsKey(session)))
> {
> map.put(session, null);
> }
> }
> Then the cpu problem does not occur.
--
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