Java–ExcessInetAddressobjectscreatedafterreceivingStatusMessages

I am currently running into an issue whereby the Media Driver is garbage collecting ~150mb every 2 – 3 hours. After looking at a few heap dumps, it appears that there are a number of InetAddress and InetSocketAddress objects being created whenever a StatusMesage is received. I’ve tried debugging and my current findings are:

• Media Drivers send out a StatusMessage every 200ms to a publisher of a stream




• When the MediaDriver receives the StatusMessage, it attempts to read the message using the DatagramChannelImpl




• Within the receive0 method of the DatagramChannelImpl.c there is a comparison of the Sender Address and CachedSenderInetAddress




• If these do not match, new instances of the InetAddress and InetSocketAddress are created and the cachedSenderInetAddress is updated




• If the Media Driver is receiving Status Messages from multiple different sources, then the cachedInetSenderAddress will keep flipping between the addresses




• Each time a Status Message is received, the comparison fails and a new object is created

Aeron Version
- First experienced on 1.8.1
- Upgraded to 1.10.5 and still experiencing

JAVA Version
- 1.8.0_171

Kernel Version
- 3.10.0-862.9.1.el7.x86_64

Steps to reproduce:
- Run Media Driver on machines A, B and C
- Publish on stream 1 from Machine A
- Subscribe on stream 1 from Machine B and C
- Observe InetAddress/InetSocketAddress objects created on Machine A after each received Status Message from B and C

Any help would be much appreciated, please let me know any more information is needed.

该提问来源于开源项目：real-logic/aeron