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From Dustin Delage <ddel...@sagecomputing.com>
Subject Tomcat 9 exe, High CPU usage due to TCP I/O with itself
Date Wed, 26 Oct 2016 17:07:32 GMT
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.

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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