> From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Subject: Re: Tomcat 9 exe, High CPU usage due to TCP I/O with itself
> On 10/27/16 1:45 PM, Dustin Delage wrote: > > Looks like the app is now slated for redevelopment. Thanks > > everyone. > I still think this has nothing to do with your application... Maybe, maybe not. On a fresh install of Tomcat 9.0.0.M11 using JDK 1.8.0_102 running as a service on Windows 7 Pro, I see the following ports in use: Protocol Local Address Remote Address State TCP <dns-name>:8009 <dns-name>:0 LISTENING TCP <dns-name>:8080 <dns-name>:0 LISTENING TCP <dns-name>:8005 <dns-name>:0 LISTENING TCP <dns-name>:55089 <dns-name>:55090 ESTABLISHED TCP <dns-name>:55090 <dns-name>:55089 ESTABLISHED TCP <dns-name>:55091 <dns-name>:55092 ESTABLISHED TCP <dns-name>:55092 <dns-name>:55091 ESTABLISHED TCP <dns-name>:55093 <dns-name>:55094 ESTABLISHED TCP <dns-name>:55094 <dns-name>:55093 ESTABLISHED TCP <dns-name>:55095 <dns-name>:55096 ESTABLISHED TCP <dns-name>:55096 <dns-name>:55095 ESTABLISHED TCP <dns-name>:55097 <dns-name>:55098 ESTABLISHED TCP <dns-name>:55098 <dns-name>:55097 ESTABLISHED TCP <dns-name>:55099 <dns-name>:55100 ESTABLISHED TCP <dns-name>:55100 <dns-name>:55099 ESTABLISHED TCPV6 <dns-name>:8009 <dns-name>:0 LISTENING TCPV6 <dns-name>:8080 <dns-name>:0 LISTENING I haven't figured out what all the paired ports with established connections are used for yet; maybe stdin, stdout, stderr, and ?? If some of the ports are redirects of stdout and/or stderr, the webapp could be dumping a lot of junk there, causing the high CPU usage. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
