When I use sendTaggedNonBlocking to send messages, I send a request, but I catch the packet and find that I have read quest twice.

[Aismy]

I am using jucx.
clietn: ucpEndpoint.sendTaggedNonBlocking(sendData, null)
server: worker.recvTaggedNonBlocking(recvBuffer, null)
sendData and recvBuffer size is 40kb.

The client only sends the server once, but the packet capture discovery has performed two rdma read operations. The size of the packet capture is also twice that of 40kb. Why is this?

[yosefe]

This is not expected. Can you pls build UCX with debug log enabled (using <ucx-dir>/contrib/configure-devel script) and run the test with UCX_LOG_LEVEL=data?