Looks like the app is now slated for redevelopment. Thanks everyone. -----Original Message----- From: Mark Thomas [mailto:ma...@apache.org] Sent: Thursday, October 27, 2016 4:48 AM To: Tomcat Users List <users@tomcat.apache.org> Subject: Re: Tomcat 9 exe, High CPU usage due to TCP I/O with itself
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 > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
