Hi all, I'm currently using httpcore-nio 4.4 for a proxy-like application and make use of the file channels when content transferring. Recently I have profiled my code under a high concurrent load and observed few unusual thread blocking occurrences. Stack traces are listed below.
*I/O threads* S-I/O-dispatcher-1 [BLOCKED] sun.nio.ch.EPollSelectorImpl.doSelect(long) EPollSelectorImpl.java:88 java.lang.Thread.run() Thread.java:745 S-I/O-dispatcher-5 [BLOCKED] org.apache.http.impl.nio.reactor.IOSessionImpl.setEvent(int) IOSessionImpl.java:164 org.apache.http.impl.nio.DefaultNHttpClientConnection.submitRequest(HttpRequest) DefaultNHttpClientConnection.java:339 *Worker threds* pool-2-thread-99 [BLOCKED] sun.nio.ch.EPollArrayWrapper.setInterest(int, int) EPollArrayWrapper.java:213 org.apache.http.nio.protocol.HttpAsyncService$HttpAsyncExchangeImpl.submitResponse(HttpAsyncResponseProducer) HttpAsyncService.java:1037 pool-2-thread-96 [BLOCKED] sun.nio.ch.EPollSelectorImpl.wakeup() EPollSelectorImpl.java:191 org.apache.http.nio.protocol.HttpAsyncService$HttpAsyncExchangeImpl.submitResponse(HttpAsyncResponseProducer) HttpAsyncService.java:1037 Previously I have used httpcore-nio 4.2.5 for the same application and did not encountered any such thread blockings. Can you help me out to figure out what might be the issue here? Thank you very much. -- *Sudheera Palihakkara.* Undergraduate Department of *Computer Science and Engineering,*Faculty of Engineering, *University of Moratuwa*, Sri Lanka.
