Unusual data loss between two 10Gbps network cards.
Unusual data loss between two 10Gbps network cards.
The issue has been resolved with your assistance, complemented by discussions on another forum and support from my brother. Thanks. Besides code issues I resolved, the main problem was disabling Flow Control on all network interfaces. For some reason from early trials we chose to turn it off. My brother recommended testing Wireshark on both sender and receiver to check if packets were being dropped by the device or due to faulty cables. He specializes in networking on Linux and wasn't familiar with tracking packet drops on Windows devices. Another forum mentioned perf monitor's Network Interface counters, noting a "Packets Discarded" counter. These are packets that reached the receiver without errors but were dropped by the device, often because the software couldn't process them quickly enough or due to buffer overflow. After re-enabling Flow Control and reverting Jumbo Frames, we achieved stable connections of up to 1.1Gbps per link with almost no packet drops—only about 10 discarded packets after 30 minutes. In short, it’s best not to disable default settings unless you understand why. The next goal is streaming four raw 4K videos simultaneously using four agents; I suspect a single socket per video isn’t sufficient and will need to enhance the code for multi-threaded support.