perfSONAR User Q&A and Other Discussion

[Aaron Brown <>]

Hey Brian,

Could you try this patch: http://ndb1.internet2.edu/~aaron/bwctl_change_iperf3_exec.patch

It converts iperf3 from a library into an exec call.

Cheers,

Aaron

On Dec 18, 2014, at 3:59 PM, Brian Candler <> wrote:

On 18/12/2014 19:23, Brian Tierney wrote:

Which version of OSX?

It is Yosemite - but I didn't have any problem building the code.

Note also that the problem I'm reporting is with bwctl/bwctld (linked to libiperf), not with iperf3 at the command line.

If I use iperf3 -s at one side, and iperf3 -c x.x.x.x [-R] at the other, I see no problem. And if I add --verbose --get-server-output, the two values agree. e.g.

Test Complete. Summary Results:
[ ID] Interval           Transfer     Bandwidth       Retr
[  6]   0.00-10.00  sec  1.08 GBytes   929 Mbits/sec 80             sender
[  6]   0.00-10.00  sec  1.08 GBytes   929 Mbits/sec                  receiver
CPU Utilization: local/receiver 15.1% (1.4%u/13.8%s), remote/sender 0.8% (0.0%u/0.9%s)

However, having restarted the bwctld daemon on OSX, I'm not able to reproduce the original problem. Instead, in one direction I get no results at all (which is a problem I was seeing between a pair of perfsonar servers in the lab previously)

[example@cov-perf-1 ~]$ bwctl -s cov-client-1 -T iperf3
bwctl: Using tool: iperf3
bwctl: 16 seconds until test results available

SENDER START

SENDER END
[example@cov-perf-1 ~]$

Regards,

Brian.