Commit 959bd6d5 authored by Leigh B. Stoller's avatar Leigh B. Stoller
Browse files

More verbiage; add a cover our butts limitations section.

parent 5af683cd
......@@ -10,6 +10,7 @@
<li> <a href="#QuickStart">Quick Start</a>
<li> <a href="#Limits">Limitations</a>
<li> <a href="#Understand">Understanding Linktest</a>
<li> <a href="#Level0">Level 0 - Do not run Linktest</a>
......@@ -56,6 +57,33 @@ found, testbed-ops is automatically notified and a message will appear
in the activation log. Otherwise, no notification will appear.
<a name="Limits"></a>
<h2>Limitations (Important, Please Read)</h2>
<li> Not all bandwidths can be accurately measured, and linktest will
skip links that it knows will give false results. Please check
the output, and be sure to test those links yourself if your
results depend on total accuracy.
<li> As with any automated testing procedure, we have to balance the desire
for accuracy with the possibility of false positives. To reduce
the number of false positives, we allow for a small amount of
fudge of any link. <b>If your results are dependent on total
accuracy, then you should test your links yourself!</b>
<li> When using linkdelays (endnodeshaping) latency is less accurate
because of the 1ms clock resolution that the kernel runs at. At
worst, latency can be off by up to 2ms, say for a roundtrip ping
<a name="Understand"></a>
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