[Click] Blocking queue element?

Eddie Kohler kohler at cs.ucla.edu
Thu Sep 23 12:01:24 EDT 2004


John Bicket wrote:
> It would get blocked - linux will buffer a small number of
> packets per socket before blocking it (even if it's not tcp), and this 
> will fill up if a device queue is marked as busy.  This is why 
> you can't really do udp tests at userlevel when using fromhost 
> configurations - you end up sending so many packets, and they 
> all get dropped when they hit click's queue.
> 
> --john

A ha.  It sounds like FromHost should reflect Queue length.  One more thing to 
do (after ToHost is fixed!).

Eddie



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