overhead measurement

Padraig Brady padraig at antefacto.com
Wed May 29 11:15:37 BST 2002


Tao Zhao wrote:
> Hi, all
> 
> I want to measure the overhead of LVS, e.g. the additional latency imposed
> by LVS instead of a traditional router. I looked up several documents
> and found Zhang's paper mentioned 60us for rewriting a 536 bytes packet.
> All measurements in other documents focuses on throughput instead of
> latency overhead.
> 
> I believe it's not very hard to measure the latency as long as we have a
> fine grain clock. Anyone knows how to get fine grain time?

We measured 60us for "normal routing" and 80us for LVS.

Padraig.





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