memory leak? a problem about DownstreamMessageEvent

chris zz12847643 at gmail.com
Tue Jan 4 00:48:35 EST 2011


now   http://121.101.216.141:11411 startup successful
Upstream network tech.  Ltd.

Chris Cheung

focus on java,c programming language and linux core



On Tue, Jan 4, 2011 at 13:10, chris cheung <zz12847643 at gmail.com> wrote:

> the problem about decoder i had resolved at last week , i found the core
> problem was i config the decoder and handler as singleton,now it were not
> singleton,  but the memory leak still exist.
> i upload the jmap dump file at http://121.101.216.141:8080/0104dump
>
> and i startup the jhat service at http://121.101.216.141:11411
>
> if you can not access http://121.101.216.141:11411  please just wait for a
> moment ,because the 0104dump size=2.7G, i'm startup jhat at  13:10
>
> i'm waiting for your reply online.
>
>
>
> Upstream network tech.  Ltd.
>
> Chris Cheung
>
> focus on java,c programming language and linux core
>
>
>
> On Tue, Jan 4, 2011 at 10:40, Trustin Lee [via Netty Forums and Mailing
> Lists] <ml-node+5887462-1798277912-309534 at n2.nabble.com<ml-node%2B5887462-1798277912-309534 at n2.nabble.com>
> > wrote:
>
>> Could you upload the heap dump somewhere?
>>
>> --
>> Trustin Lee - http://gleamynode.net/
>> Sent from a mobile device - please excuse the brevity.
>>
>> On Jan 3, 2011, at 2:06 PM, chris <[hidden email]<http://user/SendEmail.jtp?type=node&node=5887462&i=0>>
>> wrote:
>>
>> >
>> > i'm developing a webgame,when i was doing performance testing(based on
>> 8k
>> > online user)  for one day(about 15 hours),
>> > i found  memory size jvm used was 4.8G ,i dump the memory by jmap,and
>> > startup the jhat viewer,  the top 12 classes as follower:
>> >
>> > 307739 instances of class org.jboss.netty.channel.DownstreamMessageEvent
>>
>> > 297635 instances of class
>> > org.jboss.netty.util.internal.LinkedTransferQueue$Node
>> > 227420 instances of class
>> org.jboss.netty.buffer.BigEndianHeapChannelBuffer
>> > 159719 instances of class org.jboss.netty.channel.DefaultChannelFuture
>> > 152708 instances of class
>> > org.jboss.netty.channel.socket.nio.SocketSendBufferPool$PooledSendBuffer
>>
>> > 138592 instances of class
>> > org.jboss.netty.channel.DefaultWriteCompletionEvent
>> > 132096 instances of class org.jboss.netty.buffer.DuplicatedChannelBuffer
>>
>> > 120310 instances of class org.jboss.netty.buffer.DynamicChannelBuffer
>> > 107109 instances of class org.jboss.netty.channel.UpstreamMessageEvent
>> > 76816 instances of class
>> > org.jboss.netty.util.internal.ConcurrentHashMap$Segment
>> > 76816 instances of class
>> > [Lorg.jboss.netty.util.internal.ConcurrentHashMap$HashEntry;
>> > 65074 instances of class
>> > org.jboss.netty.util.internal.ConcurrentHashMap$ValueIterator
>> >
>> > i can not get why the instance count of DownstreamMessageEvent and
>> > UpstreamMessageEvent is so high?  can you  help me?
>> > thanks all.
>> > --
>> > View this message in context:
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