From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: TCP cache performance Date: Mon, 07 Jan 2008 17:57:48 -0800 (PST) Message-ID: <20080107.175748.174400658.davem@davemloft.net> References: <4782D06B.30706@gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, lachlan.andrew@gmail.com To: virtualphtn@gmail.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:40318 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755037AbYAHB5t (ORCPT ); Mon, 7 Jan 2008 20:57:49 -0500 In-Reply-To: <4782D06B.30706@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Tom Quetchenbach Date: Mon, 07 Jan 2008 17:22:51 -0800 > This suggests that efforts to improve TCP performance should focus > on cache usage rather than just processing time. Thanks for reporting your data, but we very well know what the exact problem is. When we recover from loss, we touch thousands of packets freeing up basically an entire window's worth.