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From: David Miller <davem@davemloft.net>
Subject: Re: [WIP][PATCHES] Network xmit batching
Date: Tue, 19 Jun 2007 15:28:01 -0700 (PDT)
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From: Robert Olsson <Robert.Olsson@data.slu.se>
Date: Tue, 19 Jun 2007 19:35:45 +0200

>  pktgen heavily uses gettimeofday. I was using tsc as clock source with 
>  our opterons in the lab. In late 2.6.20 gettimeofday was changed so tsc 
>  couldn't be used on opterons (pktgen at least). 
> 
>  To give you an example w.intel's 82571EB we could send 1.488 Mpps using tsc 
>  but with hpet only 400 kpps.

Converting pktgen over to ktime_t might be a nice cleanup.