TCP traffic loss, delay, or retransmissions to Java applications

Issue

• Java application suffers delay receiving network traffic
• Packet capture shows TCP Retransmissions to RHEL system running Java application
• There is sometimes a delay in TCP ACK from the system where our JVM app runs
• TCP data cannot be transferred smoothly to Java app
• We can see errors in the socket buffers from netstat -s:

123456 packets pruned from receive queue because of socket buffer overrun
234567 packets collapsed in receive queue due to low socket buffer