From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH v5 net-next] tcp: switch rtt estimations to usec
 resolution
Date: Mon, 24 Feb 2014 19:15:08 -0500 (EST)
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From: Stephen Hemminger <stephen@networkplumber.org>
Date: Mon, 24 Feb 2014 15:51:30 -0800

> The original reason I kept ms resolution and added the flag was
> that accessing high resolution time is expensive for systems where
> TSC is not stable.  Google may live in a world of SMP systems with
> good X86 CPUs with working TSC, but other architectures and system
> config's may have non-working TSC.

+1