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QPERF(1)				  User Commands 				 QPERF(1)

       qperf - Measure RDMA and IP performance


       qperf  measures	bandwidth and latency between two nodes.  It can work over TCP/IP as well
       as the RDMA transports.	On one of the nodes, qperf is typically  run  with  no	arguments
       designating  it	the  server node.  One may then run qperf on a client node to obtain mea-
       surements such as bandwidth, latency and cpu utilization.

       In its most basic form, qperf is run on one node in server mode by  invoking  it  with  no
       arguments.   On	the other node, it is run with two arguments: the name of the server node
       followed by the name of the test.  A list of tests can be found in the section, TESTS.	A
       variety of options may also be specified.

       One  can  get  more  detailed  information on qperf by using the --help option.	Below are
       examples of using the --help option:

	   qperf --help examples       Some examples of using qperf
	   qperf --help opts	       Summary of options
	   qperf --help options        Description of options
	   qperf --help tests	       Short summary and description of tests
	   qperf --help TESTNAME       More information on test TESTNAME

       In these examples, we first run qperf on a node called myserver in server mode by invoking
       it  with  no  arguments.  In all the subsequent examples, we run qperf on another node and
       connect to the server which we assume has a hostname of myserver.

       To run a TCP bandwidth and latency test:
	      qperf myserver tcp_bw tcp_lat

       To run a SDP bandwidth test for 10 seconds:
	      qperf myserver -t 10 sdp_bw

       To run a UDP latency test and then cause the server to terminate:
	      qperf myserver udp_lat quit

       To measure the RDMA UD latency and bandwidth:
	      qperf myserver ud_lat ud_bw

       To measure RDMA UC bi-directional bandwidth:
	      qperf myserver rc_bi_bw

       To get a range of TCP latencies with a message size from 1 to 64K
	      qperf myserver -oo msg_size:1:64K:*2 -vu tcp_lat

       -ar, --access_recv OnOff
	      If OnOff is non-zero, data is accessed once received.  Otherwise, data is  ignored.
	      By default, OnOff is 0.  This can help to mimic some applications.

       -ar1   Cause received data to be accessed.

       -ap, --alt_port Port
	      Set alternate path port. This enables automatic path failover.

       -lap, --loc_alt_port Port
	      Set local alternate path port. This enables automatic path failover.

       -rap, --rem_alt_port Port
	      Set remote alternate path port. This enables automatic path failover.

       -ca, --cpu_affinity PN
	      Set  cpu	affinity  to PN.  CPUs are numbered sequentially from 0.  If PN is "any",
	      any cpu is allowed otherwise the cpu is limited to the one specified.

       -lca, --loc_cpu_affinity PN
	      Set local processor affinity to PN.

       -rca, --rem_cpu_affinity PN
	      Set remote processor affinity to PN.

       -f, --flip OnOff
	      If non-zero, cause sender and receiver to play opposite roles.

       -f1    Cause sender and receiver to play opposite roles.

       -h, --help Topic
	      Print out information about Topic.  To see the list of topics, type qperf --help

       -H, --host Host
	      Run test between the current node and the qperf running on  node	Host.	This  can
	      also be specified as the first non-option argument.

       -i, --id Device:Port
	      Use RDMA Device and Port.

       -li, --loc_id Device:Port
	      Use local RDMA Device and Port.

       -ri, --rem_id Device:Port
	      Use remote RDMA Device and Port.

       -lp, --listen_port Port
	      Set the port we listen on to ListenPort.	This must be set to the same port on both
	      the server and client machines.  The default value is 19765.

       -oo, --loop Var:Init:Last:Incr
	      Run a test multiple times sequencing through a series of values.	Var is	the  loop
	      variable;  Init is the initial value; Last is the value it must not exceed and Incr
	      is the increment.  It is useful to set the --verbose_used (-vu) option in  conjunc-
	      tion with this option.

       -m, --msg_size Size
	      Set  the	message  size  to Size.  The default value varies by test.  It is assumed
	      that the value is specified in bytes however, a trailing kib or K, mib or M, or gib
	      or  G  indicates	that  the  size  is  being  specified  in kibibytes, mebibytes or
	      gibibytes respectively while a trailing kb or k, mb or m,  or  gb  or  g	indicates
	      kilobytes, megabytes or gigabytes respectively.

       -mt, --mtu_size Size
	      Set  the	MTU size.  Only relevant to the RDMA UC/RC tests.  Units are specified in
	      the same manner as the --msg_size option.

       -n, --no_msgs N
	      Set test duration by number of messages sent instead of time.

       -cp, --cq_poll OnOff
	      Turn polling mode on or off.  This is only relevant to the RDMA  tests  and  deter-
	      mines  whether  they  poll  or  wait on the completion queues.  If OnOff is 0, they
	      wait; otherwise they poll.

       -lcp, --loc_cq_poll OnOff
	      Locally turn polling mode on or off.

       -rcp, --rem_cq_poll OnOff
	      Remotely turn polling mode on or off.

       -cp1   Turn polling mode on.

       -lcp1  Turn local polling mode on.

       -rcp1  Turn remote polling mode on.

       -ip, --ip_port Port
	      Use Port to run the socket tests.  This is different from  --listen_port	which  is
	      used for synchronization.  This is only relevant for the socket tests and refers to
	      the TCP/UDP/SDP/RDS/SCTP port that the test is run on.

       -e, --precision Digits
	      Set the number of significant digits that are used to report results.

       -nr, --rd_atomic Max
	      Set the number of in-flight operations that can be  handled  for	a  RDMA  read  or
	      atomic operation to Max.	This is only relevant to the RDMA Read and Atomic tests.

       -lnr, --loc_rd_atomic Max
	      Set local read/atomic count.

       -rnr, --rem_rd_atomic Max
	      Set remote read/atomic count.

       -sl, --service_level SL
	      Set  RDMA  service  level to SL.	This is only used by the RDMA tests.  The service
	      level must be between 0 and 15.  The default service level is 0.

       -lsl, --loc_service_level SL
	      Set local service level.

       -rsl, --rem_service_level SL
	      Set remote service level.

       -sb, --sock_buf_size Size
	      Set the socket buffer size.  This is only relevant to the socket tests.

       -lsb, --loc_sock_buf_size Size
	      Set local socket buffer size.

       -rsb, --rem_sock_buf_size Size
	      Set remote socket buffer size.

       -sp, --src_path_bits N
	      Set source path bits. If the LMC is not zero, this will cause the connection to use
	      a LID with the low order LMC bits set to N.

       -lsp, --loc_src_path_bits N
	      Set local source path bits.

       -rsp, --rem_src_path_bits N
	      Set remote source path bits.

       -sr, --static_rate Rate
	      Force  InfiniBand static rate.  Rate can be one of: 2.5, 5, 10, 20, 30, 40, 60, 80,
	      120, 1xSDR (2.5 Gbps), 1xDDR (5 Gbps), 1xQDR (10 Gbps), 4xSDR (2.5 Gbps), 4xDDR  (5
	      Gbps), 4xQDR (10 Gbps), 8xSDR (2.5 Gbps), 8xDDR (5 Gbps), 8xQDR (10 Gbps).

       -lsr, --loc_static_rate
	      Force local InfiniBand static rate

       -rsr, --rem_static_rate
	      Force remote InfiniBand static rate

       -t, --time Time
	      Set test duration to Time.  Specified in seconds however a trailing m, h or d indi-
	      cates that the time is specified in minutes, hours or days respectively.

       -to, --timeout Time
	      Set timeout to Time.  This is the timeout used for various things such as  exchang-
	      ing messages.  The default is 5 seconds.

       -lto, --loc_timeout Time
	      Set  local timeout to Time.  This may be used on the server to set the timeout when
	      initially exchanging data with each client.  However, as soon  as  we  receive  the
	      client's parameters, the client's remote timeout will override this parameter.

       -rto, --rem_timeout Time
	      Set remote timeout to Time.

       -un, --unify_nodes
	      Unify  the  nodes.  Describe them in terms of local and remote rather than send and

       -uu, --unify_units
	      Unify the units that results are shown in.  Uses	the  lowest  common  denominator.
	      Helpful for scripts.

       -ub, --use_bits_per_sec
	      Use bits/sec rather than bytes/sec when displaying networking speed.

       -cm, --use_cm OnOff
	      Use  the RDMA Connection Manager (CM) if OnOff is non-zero.  It is necessary to use
	      the CM for iWARP devices.  The default is to establish the connection without using
	      the CM.  This only works for the tests that use the RC transport.

       -cm1   Use RDMA Connection Manager.

       -v, --verbose
	      Provide more detailed output.  Turns on -vc, -vs, -vt and -vu.

       -vc, --verbose_conf
	      Provide information on configuration.

       -vs, --verbose_stat
	      Provide information on statistics.

       -vt, --verbose_time
	      Provide information on timing.

       -vu, --verbose_used
	      Provide information on parameters used.

       -vv, --verbose_more
	      Provide even more detailed output.  Turns on -vvc, -vvs, -vvt and -vvu.

       -vvc, --verbose_more_conf
	      Provide more information on configuration.

       -vvs, --verbose_more_stat
	      Provide more information on statistics.

       -vvt, --verbose_more_time
	      Provide more information on timing.

       -vvu, --verbose_more_used
	      Provide more information on parameters used.

       -V, --version
	      The current version of qperf is printed.

       -ws, --wait_server Time
	      If the server is not ready, continue to try connecting for Time seconds before giv-
	      ing up.  The default is 5 seconds.

       conf   Show configuration

       quit   Cause the server to quit

       rds_bw RDS streaming one way bandwidth

	      RDS one way latency

	      SCTP streaming one way bandwidth

	      SCTP one way latency

       sdp_bw SDP streaming one way bandwidth

	      SDP one way latency

       tcp_bw TCP streaming one way bandwidth

	      TCP one way latency

       udp_bw UDP streaming one way bandwidth

	      UDP one way latency

	      RC streaming two way bandwidth

       rc_bw  RC streaming one way bandwidth

       rc_lat RC one way latency

	      UC streaming two way bandwidth

       uc_bw  UC streaming one way bandwidth

       uc_lat UC one way latency

	      UD streaming two way bandwidth

       ud_bw  UD streaming one way bandwidth

       ud_lat UD one way latency

	      XRC streaming two way bandwidth

       xrc_bw XRC streaming one way bandwidth

	      XRC one way latency

	      RC RDMA read streaming one way bandwidth

	      RC RDMA read one way latency

	      RC RDMA write streaming one way bandwidth

	      RC RDMA write one way latency

	      RC RDMA write one way polling latency

	      UC RDMA write streaming one way bandwidth

	      UC RDMA write one way latency

	      UC RDMA write one way polling latency

	      RC compare and swap messaging rate

	      RC fetch and add messaging rate

	      Verify RC compare and swap

	      Verify RC fetch and add

       Written by Johann George.

       None of the RDMA tests are available if qperf is  compiled  without  the  RDMA  libraries.
       None  of the XRC tests are available if qperf is compiled without the XRC extensions.  The
       -f option is not yet implemented in many of the tests.

qperf					  November 2012 				 QPERF(1)
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