On 26/10/2016 18:07, Dustin Delage wrote:
> Tomcat 9, running on Windows Server 2008, runs the CPU at 79% - 90%
> continuously. The only activity is tomcat spamming itself with TCP
> traffic. Same proc ID, out one port, to another port back to itself.

Tomcat doesn't do that. That looks more likely to be an app issue.

A series of thread dumps (3 thread dumps, 10 seconds apart) should
provide some pointers as to what is going on. A profiler (e.g. YourKit)
would be better.

Mark

> 
> A small sample from Process Monitor:
> 
> ##########################################################################
> ##########################################################################
> ##################
> 10:16:04.7458125 AM   Tomcat9.exe     1932    TCP Receive
> 7f00:1::d880:fe03:80fa:ffff:49199 ->
> 7f00:1:ffff:ffff:ffff:ffff:ffff:ffff:49198    SUCCESS Length: 1, seqnum:
> 0, connid: 0
> 10:16:04.7458374 AM   Tomcat9.exe     1932    TCP Send
> Sage-Web03.sage.local:49198 -> Sage-Web03.sage.local:49199    SUCCESS
> Length: 1, startime: 12341635, endtime: 12341635, seqnum: 0, connid: 0
> 10:16:04.7458805 AM   Tomcat9.exe     1932    TCP Receive
> 7f00:1::d880:fe03:80fa:ffff:49197 ->
> 7f00:1:ffff:ffff:ffff:ffff:ffff:ffff:49196    SUCCESS Length: 1, seqnum:
> 0, connid: 0
> 10:16:04.7458972 AM   Tomcat9.exe     1932    TCP Send
> Sage-Web03.sage.local:49196 -> Sage-Web03.sage.local:49197    SUCCESS
> Length: 1, startime: 12341635, endtime: 12341635, seqnum: 0, connid: 0
> 10:16:04.7459244 AM   Tomcat9.exe     1932    TCP Receive
> 7f00:1::d880:fe03:80fa:ffff:49197 ->
> 7f00:1:ffff:ffff:ffff:ffff:ffff:ffff:49196    SUCCESS Length: 1, seqnum:
> 0, connid: 0
> 10:16:04.7459507 AM   Tomcat9.exe     1932    TCP Send
> Sage-Web03.sage.local:49196 -> Sage-Web03.sage.local:49197    SUCCESS
> Length: 1, startime: 12341635, endtime: 12341635, seqnum: 0, connid: 0
> ##########################################################################
> ##########################################################################
> ###################
> 
> Attaching an image of my findings as well
> 
> Thank You,
> 
> D Delage
> 
> 
> 
> 
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