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
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.
The local network address to bind to.
The number of connections to establish between the client
and server. (default 100)
The server's port number.
Number of retries when resolving address or route.
Timeout in millseconds (ms) when resolving address or
route. (default 2000 - 2 seconds)
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.
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
firstname.lastname@example.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2021-04-01. (At
that time, the date of the most recent commit that was found in
the repository was 2021-03-24.) 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
librdmacm 2017-04-28 CMTIME(1)