Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 14 Oct 2001 05:03:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 14 Oct 2001 05:03:02 -0400 Received: from pizda.ninka.net ([216.101.162.242]:30860 "EHLO pizda.ninka.net") by vger.kernel.org with ESMTP id ; Sun, 14 Oct 2001 05:02:57 -0400 Date: Sun, 14 Oct 2001 02:03:26 -0700 (PDT) Message-Id: <20011014.020326.18308527.davem@redhat.com> To: Mika.Liljeberg@welho.com Cc: linux-kernel@vger.kernel.org Subject: Re: TCP acking too fast From: "David S. Miller" In-Reply-To: <3BC94F3A.7F842182@welho.com> In-Reply-To: <3BC9441C.887258DA@welho.com> <20011014.011246.59654800.davem@redhat.com> <3BC94F3A.7F842182@welho.com> X-Mailer: Mew version 2.0 on Emacs 21.0 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: Mika Liljeberg Date: Sun, 14 Oct 2001 11:39:22 +0300 [Otherwise a sender can force us into a permanent quickack mode simply by setting PSH on every segment.] "A sending TCP can send us garbage so bad that it hinders performance." So, your point is? :-) A sensible sending application, and a sensible TCP should not being setting PSH every single segment. And we're not coding up hacks to make the Linux receiver handle this case better. You'll have much better luck convincing us to implement ECN black hole workarounds :-) Franks a lot, David S. Miller davem@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/