perfSONAR User Q&A and Other Discussion

[Brian Tierney <>]

I could not find the documentation for this either, but you can add a 
"BWTosBits" line to the TESTSPEC section of your owmesh.conf file to do this.

eg, we do this:

<TESTSPEC=BWTCP_6HR>
DESCRIPTION                     6 Hour TCP Throughput (iperf)
TOOL                            bwctl/iperf
BWTestInterval                  21600
BWTestIntervalStartAlpha        25
BWReportInterval                2
BWTestDuration                  20
# use ESnet scavenger service
BWTosBits                       32
</TESTSPEC>





On May 18, 2012, at 9:22 AM, Chris Tomkins wrote:

> Hi,
> 
> I hope I am using this soap-box appropriately. Please feel free to
> ignore me or berate me if not. Firstly, many thanks to those
> responsible for PerfSonar, it's an excellent tool.
> 
> I would like to use PerfSonar to collect bandwidth/latency/jitter/loss
> statistics for some networks that have recently had QoS deployed for a
> future voice/videoconferencing network. However, in order to do so I
> would like to adjust the switches that are set when perfsonar calls
> bwctl - specifically I would like to change the DSCP/ToS settings that
> iperf uses and also the server port. I have had a good look around the
> documentation and forums, and have also dug around the filesystem and
> experimented with inotifywatch to try to catch the files being
> modified, but no luck.
> 
> I would be very grateful for any help or comments - and regardless,
> many thanks for reading.
> 
> Chris
> 
> -- 
> Chris Tomkins