environment: tomcat 8.5.23 CentOS 6.9 jdk8u162 b12 I recently upgraded from tomcat 7.0.61/jdk8u92 to tomcat 8.5.23/jdk8u162. Our application war file on tomcat7 has cpu >75% idle per vmstat several hours after tomcat start. Same war file on same server with tomcat8.5.23 has cpu 0% idle per vmstat several hours after restart. Same server with similar request load. Server has 4 CPUs. War file processes https REST web service requests.
I used jvisualvm to perform CPU profiling and the method with most self time is org.apache.tomcat.util.buf.Utf8Decoder.decodeHasArray. jstack shows there are 12 https-jsse-nio-8443-exec-### threads always in runnable state[1]. They have been in this state for several hours. It appears as if it's stuck in infinite loop. Using the thread's nid and lsof, I believe the tcp/https connection associated with these threads are no longer connected/established. Any known issues that could be causing this problem? I also tried using the NIO2 connector with same issue. I'm on a closed network, thus unable to show jvisualvm screen shots or verbose stack traces. [1] java.lang.Thread.State: RUNNABLE at org.apache.tomcat.util.buf.Utf8Decoder.decodeHasArray(Utf8Decoder.java:159) at org.apache.tomcat.util.buf.Utf8Decoder.decodeLoop(Utf8Decoder.java:78) at java.nio.charset.CharsetDecoder.decode(CharsetDecoder.java:579) at org.apache.tomcat.util.buf.B2CConverter.convert(B2CConverter.java:273) at org.apache.catalina.connector.InputBuffer.realReadChars(InputBuffer.java:426) at org.apache.catalina.connector.InputBuffer.checkCharBufferEof(InputBuffer.java:652) at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:468) at org.apache.catalina.connector.CoyoteReader.read(CoyoteReader.java:101) <groovy classes> <my application code with is attempting to read http request> -- Sent from: http://tomcat.10.x6.nabble.com/Tomcat-User-f1968778.html --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
