NAME

       cmtime - RDMA CM connection steps timing test.

SYNOPSIS

       cmtime [-s server_address] [-b bind_address]
                      [-c connections] [-p port_number]
                      [-r retries] [-t timeout_ms]

DESCRIPTION

       Determines  min and max times for various "steps" in RDMA CM connection setup and teardown
       between a client and server application.

       "Steps" that are timed are: create id,  bind  address,  resolve  address,  resolve  route,
       create qp, connect, disconnect, and destroy.

OPTIONS

       -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.

       -c connections
              The  number  of  connections  to establish between the client and server.  (default
              100)

       -p port_number
              The server's port number.

       -r retries
              Number of retries when resolving address or route.  (default 2)

       -t timeout_ms
              Timeout in millseconds (ms) when resolving address or route.   (default  2000  -  2
              seconds)

NOTES

       Basic  usage  is  to  start cmtime on a server system, then run cmtime -s server_name on a
       client system.

       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

       rdma_cm(7)