cmtime(1) — Linux manual page


CMTIME(1)                       librdmacm                      CMTIME(1)

NAME         top

       cmtime - RDMA CM connection steps timing test.

SYNOPSIS         top

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

DESCRIPTION         top

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

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

OPTIONS         top

       -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         top

       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         top


COLOPHON         top

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librdmacm                      2017-04-28                      CMTIME(1)