[zeromq-dev] epgm memory leak - need hepl

[Parag Patel]

Thanks Charles.  We use JZMQ binding.  This method is not exposed to the user.  It is called by the binding internally when the send method is called.

From: zeromq-dev-bounces at lists.zeromq.org [mailto:zeromq-dev-bounces at lists.zeromq.org] On Behalf Of Charles Remes
Sent: Monday, June 17, 2013 3:17 PM
To: ZeroMQ development list
Subject: Re: [zeromq-dev] epgm memory leak - need hepl

Also, make sure that the message you send is "closed" after you send it. I don't know if this binding automatically handles that for you when you send a message but it is worth investigating. See the zmq_msg_close() man page for more information.

cr

On Jun 17, 2013, at 1:48 PM, Parag Patel <Parag.Patel at fusionts.com<mailto:Parag.Patel at fusionts.com>> wrote:


Any ideas about this?  We're seeing something similar with a Java application.  We noticed that the JVM memory size is not growing, however, the process's memory space is growing.

From: zeromq-dev-bounces at lists.zeromq.org<mailto:zeromq-dev-bounces at lists.zeromq.org> [mailto:zeromq-dev-bounces at lists.zeromq.org<mailto:dev-bounces at lists.zeromq.org>] On Behalf Of Alexander Zhitlenok
Sent: Friday, June 14, 2013 6:07 PM
To: zeromq-dev at lists.zeromq.org<mailto:zeromq-dev at lists.zeromq.org>
Subject: [zeromq-dev] epgm memory leak - need hepl

Hello,
My name is Alex Zhitlenok.
We are using ZeroMq in a custom C# Application on Windows.
We use the multicast/epgm protocol.
When we run our application the memory consistently grows and sometimes the app crashes due to an Out of Memory Exception.
To try and detect what causes the problem, we've created a very simple test (just a few lines to avoid GC influence, etc.)
Even when we run this simple test program, the memory continues to grow (at a slow and linear rate, but continues to grow regardless)
To avoid "no listeners" problem in the test we run mdump.exe as a fake-client listening to the multicast port.
What are we doing wrong?
We use
ZeroMQ 3.2.3
OpenPGM 5.2.122 (http://code.google.com/p/openpgm/)
Clrzmq build for 3.2.3 (https://github.com/zeromq/clrzmq)
Mdump (https://community.informatica.com/solutions/informatica_mtools)

Software\Hardware:
Win7 Professional\64 bit
10g network

Here is the test code (the real addresses are substituted with XYZ):

        static void Main(string[] args)
        {
            ZmqContext context = ZmqContext.Create();
            ZmqSocket soc = context.CreateSocket(ZeroMQ.SocketType.PUB);

            soc.MulticastHops = 16;
            soc.MulticastRate = 100000;
            //soc.SendBufferSize = 1000000;
            soc.SendHighWatermark = 100;

            soc.Bind("epgm://192.168.XYZ.XYZ;239.10.10.10:PORT");

            byte[] test = new byte[1000];
            test[1] = (byte)('X');

            for (int i = 0; ; ++i)
            {
                test[0] = (byte) ('0' + (i%10));
                SendStatus ss = soc.Send(test);
                if( ss != SendStatus.Sent )
                    System.Diagnostics.Debug.WriteLine(String.Format("Status:{0}", ss));
                Thread.Sleep(100);
            }
        }

Thank you,
Alex

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