CMTIME(1)

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)