linux-kernel - Re: RFC: issues concerning the next NAPI interface

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Message-Id: <20070824.144436.59664160.davem@davemloft.net>
Date:	Fri, 24 Aug 2007 14:44:36 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	dlstevens@...ibm.com
Cc:	shemminger@...ux-foundation.org, akepner@....com,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	meder@...ibm.com, netdev@...r.kernel.org,
	netdev-owner@...r.kernel.org, ossthema@...ibm.com,
	raisch@...ibm.com, stefan.roscher@...ibm.com, themann@...ibm.com,
	tklein@...ibm.com
Subject: Re: RFC: issues concerning the next NAPI interface

From: David Stevens <dlstevens@...ibm.com>
Date: Fri, 24 Aug 2007 09:50:58 -0700

>         Problem is if it increases rapidly, you may drop packets
> before you notice that the ring is full in the current estimated
> interval.

This is one of many reasons why hardware interrupt mitigation
is really needed for this.
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