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Re: overhead measurement

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: overhead measurement
From: Padraig Brady <padraig@xxxxxxxxxxxxx>
Date: Wed, 29 May 2002 11:15:37 +0100
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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