What is the purpose of the Synchronizer? What is it Synchronizing, and with 
what process?  Why are the statements bunched together?

 

Mahalo,

Gerald

 

From: Chuck Hill [mailto:[email protected]] 
Sent: Tuesday, March 15, 2016 7:51 AM
To: Ken Anderson <[email protected]>; Gerald Jones 
<[email protected]>
Cc: [email protected]
Subject: Re: Performance issue

 

And most of those ERXRemoteSynchronizer log messages are pretty far apart 
(minutes).  So I doubt this is what is causing the CPU spike.  The next time 
this happens try attaching a VisualVM ( <https://visualvm.java.net> 
https://visualvm.java.net) or doing several iterations of 

sudo jstack –F <process ID>

And comparing what the threads are doing.

 

Chuck

 

 

From: < <mailto:[email protected]> 
[email protected]> on behalf of Ken 
Anderson < <mailto:[email protected]> [email protected]>
Date: Tuesday, March 15, 2016 at 5:41 AM
To: Gerald Jones < <mailto:[email protected]> 
[email protected]>
Cc: " <mailto:[email protected]> [email protected]" < 
<mailto:[email protected]> [email protected]>
Subject: Re: Performance issue

 

Gerald,

 

There are 2 different things happening here.  The session creation exception 
seems to be something you’re raising in your own code.  The lines below the 
exception relate to receiving changes made from other application instances.

 

You’re going to have to drill down to the problem a bit more before anyone on 
the list can help you.

 

Ken

 

On Mar 15, 2016, at 1:36 AM, Gerald Jones < <mailto:[email protected]> 
[email protected]> wrote:

 

Aloha Group,

 

Can anyone explain to me what’s happening in these lines in our log file?  We 
are experiencing high application cpu% that seem to coincide with  this type of 
activity.  I’m not sure how to explain it.

 

METSAdmin-2

java.lang.RuntimeException: Session Created

        at com.mauishuttle.app.Session.<init>(Session.java:20)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

        at java.lang.Class.newInstance0(Class.java:355)

        at java.lang.Class.newInstance(Class.java:308)

        at 
com.webobjects.foundation._NSUtilities.instantiateObject(_NSUtilities.java:642)

        at 
com.webobjects.appserver.WOApplication.createSessionForRequest(WOApplication.java:1974)

        at 
er.extensions.appserver.ERXApplication.createSessionForRequest(ERXApplication.java:2361)

        at 
com.webobjects.appserver.WOApplication._initializeSessionInContext(WOApplication.java:2110)

        at com.webobjects.appserver.WOContext.session(WOContext.java:369)

        at com.webobjects.appserver.WOComponent.session(WOComponent.java:1324)

        at com.mauishuttle.components.Main.session(Main.java:59)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:597)

        at 
com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636)

        at 
com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)

        at 
com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)

        at 
com.webobjects.appserver.WOComponent.valueForKey(WOComponent.java:1736)

        at 
com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey(NSKeyValueCoding.java:447)

        at 
com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:216)

        at 
com.webobjects.appserver.WOComponent.valueForKeyPath(WOComponent.java:1804)

        at 
com.webobjects.appserver._private.WOKeyValueAssociation.valueInComponent(WOKeyValueAssociation.java:50)

        at 
com.webobjects.appserver.WOAssociation.booleanValueInComponent(WOAssociation.java:276)

        at 
er.extensions.components.conditionals.ERXWOConditional.conditionInComponent(ERXWOConditional.java:47)

        at 
er.extensions.components.conditionals.ERXWOConditional.meetsConditionInComponent(ERXWOConditional.java:52)

        at 
er.extensions.components.conditionals.ERXWOConditional.appendToResponse(ERXWOConditional.java:124)

        at 
com.webobjects.appserver._private.WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)

        at 
com.webobjects.appserver._private.WODynamicGroup.appendToResponse(WODynamicGroup.java:136)

        at 
com.webobjects.appserver.WOComponent.appendToResponse(WOComponent.java:1122)

        at 
er.extensions.components.ERXComponent.appendToResponse(ERXComponent.java:195)

        at 
com.mauishuttle.components.wrappers.PageWrapper.appendToResponse(PageWrapper.java:36)

        at 
com.webobjects.appserver._private.WOComponentReference.appendToResponse(WOComponentReference.java:135)

        at 
com.webobjects.appserver._private.WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)

        at 
com.webobjects.appserver._private.WODynamicGroup.appendToResponse(WODynamicGroup.java:136)

        at 
com.webobjects.appserver.WOComponent.appendToResponse(WOComponent.java:1122)

        at 
er.extensions.components.ERXComponent.appendToResponse(ERXComponent.java:195)

        at 
com.mauishuttle.components.pages.DashboardPage.appendToResponse(DashboardPage.java:42)

        at 
com.webobjects.appserver.WOComponent._appendPageToResponse(WOComponent.java:1574)

        at 
com.webobjects.appserver.WOComponent._generateResponseInContext(WOComponent.java:1543)

        at 
com.webobjects.appserver.WOComponent.generateResponse(WOComponent.java:1538)

        at 
com.webobjects.appserver._private.WOActionRequestHandler._handleRequest(WOActionRequestHandler.java:278)

        at 
com.webobjects.appserver._private.WOActionRequestHandler.handleRequest(WOActionRequestHandler.java:161)

        at 
er.extensions.appserver.ERXDirectActionRequestHandler.handleRequest(ERXDirectActionRequestHandler.java:128)

        at 
com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1687)

        at 
er.extensions.appserver.ERXApplication.dispatchRequestImmediately(ERXApplication.java:2112)

        at 
er.extensions.appserver.ERXApplication.dispatchRequest(ERXApplication.java:2077)

        at 
com.webobjects.appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144)

        at 
com.webobjects.appserver._private.WOWorkerThread.run(WOWorkerThread.java:226)

        at java.lang.Thread.run(Thread.java:662)

Mar 14 16:04:02 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:04:19 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:04:37 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:04:38 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:06:54 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:09:03 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:48348

Mar 14 16:10:14 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:48348

Mar 14 16:10:14 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:48348

Mar 14 16:10:22 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:51459

Mar 14 16:16:11 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:51459

Mar 14 16:16:26 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:51459

Mar 14 16:16:30 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:51459

Mar 14 16:21:26 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 9 changes 
from 10.198.52.77:51459

Mar 14 16:25:10 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 9 changes 
from 10.198.52.77:51459

Mar 14 16:33:06 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:34:19 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:34:42 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:36:10 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:36:12 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:48348

Mar 14 16:36:12 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:48348

Mar 14 16:36:27 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:38:09 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:38:11 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:39:56 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:39:57 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:40:41 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:40:42 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:41:00 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:53157

Mar 14 16:41:01 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:41:45 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:53157

Mar 14 16:41:46 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:42:49 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:53157

Mar 14 16:42:50 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:43:05 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:53157

Mar 14 16:43:06 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:46:06 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:53157

Mar 14 16:46:07 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:48:14 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:48:14 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 16:52:10 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:48348

Mar 14 16:53:34 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:48348

Mar 14 16:53:34 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:48348

Mar 14 16:53:49 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 5 changes 
from 10.198.52.77:48348

Mar 14 16:53:50 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:48348

Mar 14 16:56:46 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:53157

Mar 14 16:57:19 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 16:59:40 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:48348

Mar 14 17:03:56 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:53157

Mar 14 17:06:48 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 9 changes 
from 10.198.52.77:48348

Mar 14 17:06:58 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 7 changes 
from 10.198.52.77:53157

Mar 14 17:13:43 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:48348

Mar 14 17:13:44 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:48348

Mar 14 17:15:21 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:53157

Mar 14 17:18:15 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:53157

Mar 14 17:18:38 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 5 changes 
from 10.198.52.77:53157

Mar 14 17:19:48 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:53157

Mar 14 17:20:22 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 17:20:25 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 3 changes 
from 10.198.52.77:53157

Mar 14 17:20:42 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 1 changes 
from 10.198.52.77:53157

Mar 14 17:22:50 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 2 changes 
from 10.198.52.77:53157

Mar 14 17:24:18 METSAdmin[2003] INFO  
er.extensions.remoteSynchronizer.ERXRemoteSynchronizer  - Received 8 changes 
from 10.198.52.77:48348

 

 

I appreciate any and all input.

 

Mahalo,

Gerald

 

 

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