1 .\" Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md
2 .TH "RSTREAM" 1 "2011-11-16" "librdmacm" "librdmacm" librdmacm
4 rstream \- streaming over RDMA ping-pong test.
8 \fIrstream\fR [-s server_address] [-b bind_address] [-f address_format]
9 [-B buffer_size] [-I iterations] [-C transfer_count]
10 [-S transfer_size] [-p server_port] [-T test_option]
13 Uses the streaming over RDMA protocol (rsocket) to connect and exchange
14 data between a client and server application.
18 The network name or IP address of the server system listening for
19 connections. The used name or address must route over an RDMA device.
20 This option must be specified by the client.
23 The local network address to bind to.
26 Supported address formats are ip, ipv6, gid, or name.
29 Indicates the size of the send and receive network buffers.
32 The number of times that the specified number of messages will be
33 exchanged between the client and server. (default 1000)
36 The number of messages to transfer from the client to the server and
37 back again on each iteration. (default 1000)
40 The size of each send transfer, in bytes. (default 1000) If 'all'
41 is specified, rstream will run a series of tests of various sizes.
44 The server's port number.
47 Specifies test parameters. Available options are:
49 s | socket - uses standard socket calls to transfer data
51 a | async - uses asynchronous operation (e.g. select / poll)
53 b | blocking - uses blocking calls
55 f | fork - fork server processing (forces -T s option)
57 n | nonblocking - uses non-blocking calls
59 r | resolve - use rdma cm to resolve address
61 v | verify - verifies data transfers
63 Basic usage is to start rstream on a server system, then run
64 rstream -s server_name on a client system. By default, rstream
65 will run a series of latency and bandwidth performance tests.
66 Specifying a different iterations, transfer_count, or transfer_size
67 will run a user customized test using default values where none
70 Because this test maps RDMA resources to userspace, users must ensure
71 that they have available system resources and permissions. See the
72 libibverbs README file for additional details.