perfSONAR User Q&A and Other Discussion

[Jason Zurawski <>]

On 12/14/10 5:57 AM, jim warner wrote:
> On 12/13/2010 5:19 PM, Jason Zurawski wrote:
> > This field indicates if BWCTL was able to test bandwidth in each
> > direction: from your host to the remote host, and from the remote host
> > to your host. I will add both of these clarifications to the FAQ.
> ==
> Thanks. I'll note that this is the only field on that screen that
> presents a *result*. The rest of the columns contain test parameters.
> That is a curious design choice. While documentation always helps, I
> suggest that column should be dropped in the interest of consistency and
> clarity in the next release. If the test is only working in one
> direction, this will show up in the bar graphs just below the parameter
> display -- assuming the site labels are large enough to be read.
>
> It would, I think, be helpful if the values in the Window column said
> "auto" instead of using a blank column to indicate that auto-tuning is
> in effect. And some indication like "N.A." for the bandwidth column
> might make sense for TCP tests.


I will make a note of each of these enhancements.


> At Santa Cruz we don't set the window size so I went looking for
> perfsonar instances that do. The one I found (130.126.0.109) shows a
> window size of "3" for all tests. I was expecting to see something in KB
> or MB. It would be a good addition to the documentation to explain what
> is in this column.


Good catch, I will file a bug on this issue to be sure we are including 
a units designation.

Thanks;

-jason