perfSONAR User Q&A and Other Discussion

[Brian Tierney <>]

Alex:

Try doing a yum update iperf3 to make sure you have the newest version,

and make sure you dont have an older version of iperf3 in /usr/local/bin or some other location.

Also, did you really mean to do a 1 second test? Or did you want "-i1", not "-t1"

On Wed, Oct 15, 2014 at 5:48 AM, Aaron Brown <> wrote:

Hey Alex,

If you look at the version info, it’s using iperf3: "iperf version 3.0.1 (10 January 2014)”. It’s just an older version of iperf3, which may be the problem.

Cheers,
Aaron

On Oct 15, 2014, at 8:27 AM, <> <> wrote:

> Hi all,
>
> I've recently done a fresh install of Toolkit 3.4, and when running bwctl tests via the commandline i'm finding that bwctl is NOT using iperf3 even when being expressly told to:
>
> [root@nettest2 ~]# bwctl -t1 -T iperf3 -s nettest3 -vv
> Messages being sent to syslog(user,err)
> bwctl[8469]: FILE=util.c, LINE=466, BWLDiscoverSourceAddr(): Looking up address: nettest3
> bwctl[8469]: FILE=util.c, LINE=501, BWLDiscoverSourceAddr(): Returning: 1.1.1.1
> bwctl[8469]: FILE=bwctl.c, LINE=2739, Resolving nettest3
> bwctl[8469]: FILE=bwctl.c, LINE=2751, Current session is remote, using nettest3 as the address for client.
> bwctl[8469]: FILE=util.c, LINE=466, BWLDiscoverSourceAddr(): Looking up address: nettest3
> bwctl[8469]: FILE=util.c, LINE=501, BWLDiscoverSourceAddr(): Returning: 1.1.1.1
> bwctl[8469]: FILE=bwctl.c, LINE=2739, Resolving 1.1.1.1
> bwctl[8469]: FILE=bwctl.c, LINE=2751, Current session is local, using 1.1.1.1 as the address for server.
> bwctl[8469]: FILE=bwctl.c, LINE=2796, Available in-common: iperf nuttcp iperf3
> bwctl[8469]: FILE=bwctl.c, LINE=2821, Using tool: iperf3
> bwctl[8469]: FILE=bwctl.c, LINE=2908, Requested Time: 1413375726.190032
> bwctl[8469]: FILE=bwctl.c, LINE=2910, Latest Acceptable Time: 1413376326.190032
> bwctl[8469]: FILE=bwctl.c, LINE=3078, Reservation(localhost): 1413375733.587332
> bwctl[8469]: FILE=bwctl.c, LINE=2947, Server 'localhost' accepted test request at time 1413375733.587332
> bwctl[8469]: FILE=bwctl.c, LINE=3078, Reservation(nettest3): 1413375733.587332
> bwctl[8469]: FILE=bwctl.c, LINE=2971, Client 'nettest3' accepted test request at time 1413375733.587332
> bwctl[8469]: FILE=bwctl.c, LINE=3283, 9 seconds until test results available
>
> RECEIVER START
> bwctl: start_endpoint: 3622364525.939829
> bwctl: run_endpoint: receiver: 1.1.1.1
> bwctl: run_endpoint: sender: 2.2.2.2
> bwctl: run_tool: tester: iperf3
> bwctl: run_tool: receiver: 1.1.1.1
> bwctl: run_tool: sender: 2.2.2.2
> bwctl: start_tool: 3622364530.263081
> iperf version 3.0.1 (10 January 2014)
> Linux nettest2.diamond.ac.uk 2.6.32-431.29.2.el6.aufs.web100.x86_64 #1 SMP Wed Sep 10 05:45:30 PDT 2014 x86_64 x86_64 x86_64 GNU/Linux
> -----------------------------------------------------------
> Server listening on 5019
> -----------------------------------------------------------
> Time: Wed, 15 Oct 2014 12:22:13 GMT
> Accepted connection from 2.2.2.2, port 52277
>      Cookie: nettest3.diamond.ac.uk.1413375733.58
>      TCP MSS: 1448 (default)
> [ 17] local 1.1.1.1 port 5019 connected to 2.2.2.2 port 40169
> Starting Test: protocol: TCP, 1 streams, 131072 byte blocks, omitting 0 seconds, 1 second test
> [ ID] Interval           Transfer     Bandwidth
> [ 17]   0.00-1.00   sec  1.11 GBytes  9.51 Gbits/sec
> [ 17]   1.00-1.04   sec  44.6 MBytes  9.89 Gbits/sec
> - - - - - - - - - - - - - - - - - - - - - - - - -
> Test Complete. Summary Results:
> [ ID] Interval           Transfer     Bandwidth       Retr
> [ 17]   0.00-1.04   sec  1.16 GBytes  9.60 Gbits/sec    0         sender
> [ 17]   0.00-1.04   sec  1.15 GBytes  9.53 Gbits/sec              receiver
> CPU Utilization: local/receiver 18.8% (0.3%u/18.7%s), remote/sender 29.6% (0.8%u/30.5%s)
> bwctl: stop_tool: 3622364534.863543
> bwctl: stop_endpoint: 3622364535.864037
>
> RECEIVER END
>
>
> I know this worked in previous versions - we were using the extra "retries" output from iperf3 to track down a problem.
>
> Note that i'm telling bwctl to use iperf3, iperf3 is amongst the available test tools, and bwctl says "Using tool: iperf3" - but then it seems to use standard iperf - and gives the output from standard iperf?
>
> Thanks,
> Alex White
> Diamond Light Source
>
>
>
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--
Brian Tierney, http://www.es.net/tierney
Energy Sciences Network (ESnet), Berkeley National Lab
http://fasterdata.es.net