Yes,
One instance of
org.apache.mina.core.session.DefaultIoSessionDataStructureFactory$DefaultWriteRequestQueue
contains :
- for 2.0.0-RC1 : one instance of org.apache.mina.util.CircularQueue
with an array of many
org.apache.mina.filter.codec.ProtocolCodecFilter$EncodedWriteRequest
- for 2.0.0-RC2-SNAPSHOT : many recursive instances of
java.util.concurrent.ConcurrentLinkedQueue
Tks,
Eric
On 04/05/2010 10:51 AM, Norman Maurer wrote:
I think thats only because mina-trunk is not using CircularQueue
anymore. It now seems to use ConcurrentLinkedQueue.
Bye,
Norman
2010/4/5 Eric Charles<eric.char...@u-mangate.com>:
Hi Ashish,
Please also note that we have 2 different exceptions:
- http://people.apache.org/~norman/oom/Screenshot.png that occurs with mina
2.0.0-RC1
-
http://people.apache.org/~norman/oom/Screenshot-Eclipse_Memory_Analyzer.png
that occurs with 2.0.0-RC2-SNAPSHOT
It happens on jdk 1.6 (and also 1.7)
Tks,
Eric
On 04/05/2010 10:01 AM, Ashish wrote:
Thanks Norman,
Will try to see this as soon as I can get some time from paid job :)
cheers
ashish
On Mon, Apr 5, 2010 at 1:27 PM, Norman Maurer
<norman.mau...@googlemail.com> wrote:
Hi Ashish,
thx for your reply. The problem is sometimes it takes sometime to get
the OOM, other times it happens within one minute. One of our users
reported to me that it happened within 1 minute (10 seconds and 30
seconds), after he switched to MINA trunk. So it seems it is faster
reproducable with MINA trunk. I uploaded the screenshot of Eclipse
Memory Analyzer to :
http://people.apache.org/~norman/oom/Screenshot-Eclipse_Memory_Analyzer.png
This was the one we got with MINA trunk. So you it again shows all the
memory allocated by MINA.
To reproduce the OOM you must perform the following steps:
1) svn checkout http://svn.apache.org/repos/asf/server/trunk james-trunk
2) cd james-trunk
2) mvn clean package
3) tar xfvz
spring-deployment/target/james-spring-deployment-3.0-M1-bin.tar.gz
4) cd james-string-deploymnet-3.0-M1/bin
5) sudo ./run.sh
6) telnet localhost 4555 (user root, pass root)
7) adduser test test
8) quit
Now bomb the server with emails. You can use for example smtp-source
for it (wich is included in postfix)
9) smtp-source -s 20 -l 10100 -m 200000 -c -f t...@test.de -t test
localhost:25
This will bomb the servers with 200000 emails with 20 concurrent
sessions.
Hope this helps,
Bye,
Norman
2010/4/5 Ashish<paliwalash...@gmail.com>:
On Sun, Apr 4, 2010 at 12:59 AM, Norman Maurer<nor...@apache.org>
wrote:
Hi all,
we at JAMES use MINA since a while now for our socket stuff. After
doing some stress tests we encountered some OOM Exceptions. The same
was seen by one of our users which use JAMES trunk. After debugging
stuff it seems like the cause of the OOM is MINA. We took some heap
which shows that MINA is takin the most memory. The class which shows
the memory usage was:
org.apache.mina.filter.codec.ProtocolCodecFilter$EncodedWriteRequest
I attach the screnshots which shows the problem. Any idea ? We are
using MINA-2.0.0-RC1.
Maybe I'm wrong and the whole OOM is not related to MINA at all..
Thanks,
Norman
Ps: Please keep server-dev in the cc
Norman,
Is there a way to reproduce this? I just want to try it out myself and
debug.
--
thanks
ashish
Blog: http://www.ashishpaliwal.com/blog
My Photo Galleries: http://www.pbase.com/ashishpaliwal
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