Normally the OOM happens randomly. However it happens more often recently. I will deploy 2 servers with 1.5 and 1.6. See what will happen. Thanks.
On 7/21/07, 向秦贤 <[EMAIL PROTECTED]> wrote:
No, I dont think it is a bug of vm. Running in jdk6, just try to expect jdk6 maybe smart enough to handle direct buffer reference. I done a quick check of mina code, and not found "release direct buffer" code. Is there a result when running jdk6? 2007/7/21, mat <[EMAIL PROTECTED]>: > > Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_08-b03) > Java HotSpot(TM) Client VM (build 1.5.0_08-b03, mixed mode, sharing) > Windows 2003 > > So you think it is bug of JVM? > > On 7/21/07, 向秦贤 <[EMAIL PROTECTED]> wrote: > > > > Not sure your jdk version. > > http://issues.apache.org/jira/browse/DIRMINA-320 not running in jdk6. > > Try run in jdk6 to check it out whether happen again. > > There a sure thing, some direct buffer reference hold by application. vm > > cannot clean it. > > > > 2007/7/21, mat <[EMAIL PROTECTED]>: > > > > > > 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.DefaultExceptionMonitorexceptionCaught > > > > > 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 > > > > > > > > > > > > > > > -- > > 向秦贤 > > > -- 向秦贤
