NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES | SEE ALSO | COLOPHON

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
       application.

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

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

       rdma_cm(7)

COLOPHON         top

       This page is part of the rdma-core (RDMA Core Userspace Libraries and
       Daemons) project.  Information about the project can be found at 
       ⟨https://github.com/linux-rdma/rdma-core⟩.  If you have a bug report
       for this manual page, send it to linux-rdma@vger.kernel.org.  This
       page was obtained from the project's upstream Git repository
       ⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2019-07-28.  (At
       that time, the date of the most recent commit that was found in the
       repository was 2019-07-25.)  If you discover any rendering problems
       in this HTML version of the page, or you believe there is a better or
       more up-to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not part
       of the original manual page), send a mail to man-pages@man7.org

librdmacm                        2017-04-28                        CMTIME(1)