memory leak? a problem about DownstreamMessageEvent

Tue Jan 4 05:22:58 EST 2011

haha,  how about your download?
i'm sorry for forget to compress
now http://121.101.216.141:8080/0104dump.tar.gz is available
only 360m
Upstream network tech.  Ltd.

Chris Cheung

focus on java,c programming language and linux core

On Tue, Jan 4, 2011 at 15:19, chris cheung <zz12847643 at gmail.com> wrote:

> ok  thank you  ,  it is that jhat service  can help you?
>
>
> Upstream network tech.  Ltd.
>
> Chris Cheung
>
> focus on java,c programming language and linux core
>
>
>
> On Tue, Jan 4, 2011 at 15:10, Trustin Lee [via Netty Forums and Mailing
> Lists] <ml-node+5887812-1030514654-309534 at n2.nabble.com<ml-node%2B5887812-1030514654-309534 at n2.nabble.com>
> > wrote:
>
>> It seems to take almost eternity to download the heap dump.  Let me get
>> back to you once I finish downloading it and have a chance to analyze it.
>>
>> On 01/04/2011 02:10 PM, chris 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] <[hidden email]<http://user/SendEmail.jtp?type=node&node=5887812&i=0>
>> <[hidden email] <http://user/SendEmail.jtp?type=node&node=5887812&i=1>>
>> >> 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:
>> >>
>> http://netty-forums-and-mailing-lists.685743.n2.nabble.com/memory-leak-a-problem-about-DownstreamMessageEvent-tp5880466p5880466.html<http://netty-forums-and-mailing-lists.685743.n2.nabble.com/memory-leak-a-problem-about-DownstreamMessageEvent-tp5880466p5880466.html?by-user=t&by-user=t>
>> <
>> http://netty-forums-and-mailing-lists.685743.n2.nabble.com/memory-leak-a-problem-about-DownstreamMessageEvent-tp5880466p5880466.html?by-user=t<http://netty-forums-and-mailing-lists.685743.n2.nabble.com/memory-leak-a-problem-about-DownstreamMessageEvent-tp5880466p5880466.html?by-user=t&by-user=t&by-user=t>>
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>> --
>> Trustin Lee, http://gleamynode.net/
>>
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