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Date: Mon, 19 Jun 2006 11:34:57 -0600
From: "Chris Friesen" <cfriesen@nortel.com>
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To: Andi Kleen <ak@suse.de>
CC: Jesper Dangaard Brouer <hawk@diku.dk>,
       Harry Edmon <harry@atmos.washington.edu>, linux-kernel@vger.kernel.org,
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Subject: Re: Network performance degradation from 2.6.11.12 to 2.6.16.20
References: <4492D5D3.4000303@atmos.washington.edu> <44948EF6.1060201@atmos.washington.edu> <Pine.LNX.4.61.0606191638550.23553@ask.diku.dk> <200606191724.31305.ak@suse.de>
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Andi Kleen wrote:

> Incoming packets are only time stamped
> when someone asks for the timestamps.

Doesn't that add scheduling latency to the timestamps?  Or is is a flag 
that gets set to trigger timestamping at packet arrival?

Chris