http://issues.apache.org/jira/browse/DIRMINA-320
Please check this out. It seems that i am not the only one who faces this problem and it happens in mina core. I quote something written by Trustin. "Other session might have allocated huge memory block and other session might be being affected by its side-effect. " However, I only had one client connecting to my server when OOM occurs. On 7/21/07, 向秦贤 <[EMAIL PROTECTED]> wrote:
Maybe Direct buffer not released. Direct buffer must explicit release. so somewhere may check if direct buffer and set to null. 2007/7/21, mat <[EMAIL PROTECTED]>: > > I captured the exception message. > > org.apache.mina.common.support.DefaultExceptionMonitor exceptionCaught > Unexpected exception. > java.lang.OutOfMemoryError: Direct buffer memory > at java.nio.Bits.reserveMemory > at java.nio.DirectByteBuffer.<init> > at java.nio.ByteBuffer.allocateDirect > at sun.nio.ch.Util.getTemporaryDirectBuffer > at sun.nio.ch.IOUtil.write > at sun.nio.ch.SocketChannelImpl.write > at org.apache.mina.transport.socket.nio.SocketIOProcessor.doFlush< > SocketIoProcessor.java:428> > at org.apache.mina.transport.socket.nio.SocketIOProcessor.doFlush< > SocketIoProcessor.java:366> > at org.apache.mina.transport.socket.nio.SocketIOProcessor.access$600< > SocketIoProcessor.java:44> > at org.apache.mina.transport.socket.nio.SocketIoProcessor$Worker.run< > SocketIoProcessor.java:509> > at org.apache.mina.util.NamePreservingRunnable.run< > NamePreservingRunnable.java:43> > at java.util.concurrent.ThreadPoolExecutor$Worker.runTask > at java.util.concurrect.ThreadPoolExecutor$Worker.run > at java.lang.Thread.run > > > On 7/20/07, Luis Neves <[EMAIL PROTECTED]> wrote: > > > > Hi, > > > > mat wrote: > > > My server sometimes faced "OOM" problem. (I couldn't profile it since > > TPTP > > > crashed my server before OOM occured). I didn't see major memory leak > > when > > > profiling. Therefore, I believe OOM happens when READ or WRITE > operation > > > can't handle the incoming messages or outgoing messages. (However my > > > incoming messages normally 20 * 512bytes/sec, NOT too fast, right?). > > Last > > > time i saw my server memory usage is over 600MB in windows XP. > > > > Your code is broken ... the question is where. Mina can handle that > amount > > of > > messages without breaking a sweat. > > Do you have some kind of heavy processing in the receiving end that > delays > > the > > acceptance of messages? > > > > Did you try to use the ReadThrottleFilter? > > How are you doing you writes? > > A simple "iosession.write()" ? > > Did you try something like: > > WriteFuture wf = iosession.write(); > > wf.join(); > > > > Can we see the code of your Encoder/Decoder? > > > > > > -- > > Luis Neves > > > -- 向秦贤
