Subject: Re: RFC: possible NAPI improvements to reduce interrupt rates for low traffic rates

From: James Chapman <[email-masked]>
Date: Mon, 10 Sep 2007 10:25:57 +0100

Andi Kleen wrote:
> James Chapman <[email-masked]> writes:

> On some platforms the precise timers (like ktime_get()) can be slow,
> but often they are fast.  It might make sense to use a shorter
> constant time wait on those with fast timers at least. Right now this
> cannot be known by portable code, but there was a proposal some time
> ago to export some global estimate to tell how fast
> ktime_get().et.al. are. That could be reviewed.

Interesting. Is ktime_get() fast enough on P4 systems? I'll be using 
those to test with.

-- 
James Chapman
Katalix Systems Ltd
http://www.katalix.com
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