udpong — unreliable datagram streaming over RDMA ping-pong test.


udpong [-s server_address] [-b bind_address]
			[-B buffer_size] [-C transfer_count]
			[-S transfer_size] [-p server_port] [-T test_option]


Uses unreliable datagram streaming over RDMA protocol (rsocket) to connect and exchange data between a client and server application.


-s server_address

The network name or IP address of the server system listening for connections.  The used name or address must route over an RDMA device. This option must be specified by the client.

-b bind_address

The local network address to bind to.

-B buffer_size

Indicates the size of the send and receive network buffers.

-C transfer_count

The number of messages to transfer from the client to the server and back again on each iteration.  (default 1000)

-S transfer_size

The size of each send transfer, in bytes.  (default 1000)

-p server_port

The server's port number.

-T test_option

Specifies test parameters.  Available options are:

s | socket  - uses standard socket calls to transfer data

a | async - uses asynchronous operation (e.g. select / poll)

b | blocking - uses blocking calls

n | nonblocking - uses non-blocking calls

e | echo - server echoes all messages


Basic usage is to start udpong on a server system, then run udpong -s server_name on a client system.  udpong will run a series of latency and bandwidth performance tests. Specifying a different transfer_count or transfer_size will run a user customized test using default values where none have been specified.

Because this test maps RDMA resources to userspace, users must ensure that they have available system resources and permissions.  See the libibverbs README file for additional details.

See Also



2017-04-28 librdmacm