tomcat_thread_blocking_ssl 톰켓에서 thread 않죽음 thread 덤프를 보면 아레의 클래스 들임
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 java.net.SocketOutputStream.socketWrite0(Native Method) java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109) java.net.SocketOutputStream.write(SocketOutputStream.java:153) sun.security.ssl.OutputRecord.writeBuffer(OutputRecord.java:431) sun.security.ssl.OutputRecord.write(OutputRecord.java:417) sun.security.ssl.SSLSocketImpl.writeRecordInternal(SSLSocketImpl.java:876) sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:847) sun.security.ssl.AppOutputStream.write(AppOutputStream.java:123) org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:215) org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480) org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366) org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:240) org.apache.coyote.http11.filters.ChunkedOutputFilter.doWrite(ChunkedOutputFilter.java:119) org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:192) org.apache.coyote.Response.doWrite(Response.java:499) org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:402) org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480) org.apache.catalina.connector.OutputBuffer.realWriteChars(OutputBuffer.java:485) org.apache.tomcat.util.buf.CharChunk.flushBuffer(CharChunk.java:464) org.apache.tomcat.util.buf.CharChunk.append(CharChunk.java:384) org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:548) org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:174) org.apache.catalina.connector.CoyoteWriter.write(CoyoteWriter.java:184) org.apache.catalina.connector.CoyoteWriter.print(CoyoteWriter.java:248) com.adgather.servlet.AdBanner.doGet(AdBanner.java:847) javax.servlet.http.HttpServlet.service(HttpServlet.java:624) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) com.adgather.filter.XssFilter.doFilter(XssFilter.java:89) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745)
지금까지는 생기는 빈도가 작아서 신경을 안썼는데 http에서는 잘 생기지 않고 https에서 자주 생김
일단 네트워크에 비정상적인 상황같은데 이문제는 처리를 할때 늦어져서라고 판단이 되어서 기존에 쓰던 org.apache.coyote.http11.Http11Protocol
잘된다 좀더 모니터링 해봐야겠지만 Http11NioProtocol가는것이 좋은것 같다.
Java Non Blocking Connector는 SSL Handshake을 Non blocking 지원해서 잘되는것 같다.
참고로 톰캣에서 protocol을 설정하지 않으면 아래의 2가지 connector를 자동으로 스위칭 한다. tomcat 7 기준
1 2 3 4 5 blocking Java connector - org.apache.coyote.http11.Http11Protocol the APR/native connector - org.apache.coyote.http11.Http11AprProtocol
참조 