NDT-DEV email list created

Revision: 650
Author:   

Date:     Wed Sep 21 12:27:31 2011
Log:      Extended the description of the S2C known limitation.
http://code.google.com/p/ndt/source/detail?r=650

Modified:
 /wiki/NDTTestMethodology.wiki

=======================================
--- /wiki/NDTTestMethodology.wiki       Wed Sep 21 12:20:42 2011
+++ /wiki/NDTTestMethodology.wiki       Wed Sep 21 12:27:31 2011
@@ -145,7 +145,7 @@

 ==== Known Limitations (Server-To-Client Throughput Test) ====

-A 10 second test may not be enough time for TCP to reach a steady-state on  
a high bandwidth, high latency link.
+A 10 second test may not be enough time for TCP to reach a steady-state on  
a high bandwidth, high latency link. However, the increased information  
that the web100 variables provide could be used to answer this question.  
Thus the NDT server could detect and report if something was preventing the  
system from fully utilising the link. For example tracking how long slow  
start ran and what the maximum CWND value was can tell us if the connection  
was network limited or configuration limited.  On a transatlantic 10 Gbps  
link slow start should run for about 3 seconds and CWND should indicate the  
speed peaked at 10 Gbps.

 == Specific Detection Algorithms/Heuristics ==