Subject: Re: [PATCH] Bound TSO defer time (resend)

From: John Heffner <[email-masked]>
Date: Tue, 17 Oct 2006 00:18:33 -0400

Stephen Hemminger wrote:
> On Mon, 16 Oct 2006 20:53:20 -0400 (EDT)
> John Heffner <[email-masked]> wrote:

>> This patch limits the amount of time you will defer sending a TSO segment
>> to less than two clock ticks, or the time between two acks, whichever is
>> longer.

> 
> Okay, but doing any timing on clock ticks makes the behavior dependent
> on the value of HZ which doesn't seem desirable. Should this be based
> on RTT or a real-time values?

It would be nice to use a high res clock so you don't depend on HZ, but 
this is still expensive on most SMP arch's as I understand it.

   -John