linux-kernel - Re: loaded router, excessive getnstimeofday in oprofile

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Message-ID: <20080827162735.GW26610@one.firstfloor.org>
Date:	Wed, 27 Aug 2008 18:27:35 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Rick Jones <rick.jones2@...com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	Eric Dumazet <dada1@...mosbay.com>,
	Denys Fedoryshchenko <denys@...p.net.lb>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: loaded router, excessive getnstimeofday in oprofile

> Those banks really want to crank down on latency - to the point they 
> start disabling interrupt coalescing.  I bet they'd toss anything out 
> they could to shave another microsecond.

This change would actually likely lower their latency.

-Andi
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