From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 27 Feb 2001 06:57:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 27 Feb 2001 06:56:58 -0500 Received: from router-100M.swansea.linux.org.uk ([194.168.151.17]:3085 "EHLO the-village.bc.nu") by vger.kernel.org with ESMTP id ; Tue, 27 Feb 2001 06:56:56 -0500 Subject: Re: Linux 2.4.1 network (socket) performance To: davem@redhat.com (David S. Miller) Date: Tue, 27 Feb 2001 11:59:14 +0000 (GMT) Cc: root@chaos.analogic.com, manfred@colorfullife.com (Manfred Spraul), linux-kernel@vger.kernel.org (Linux kernel) In-Reply-To: <15002.60558.421029.405754@pizda.ninka.net> from "David S. Miller" at Feb 26, 2001 03:53:50 PM X-Mailer: ELM [version 2.5 PL1] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > I'm still talking with Alexey about how to fix this, I might just > prefer killing this fallback mechanism of skb_alloc_send_skb then > make AF_UNIX act just like everyone else. > > This was always just a performance hack, and one which makes less > and less sense as time goes on. When I first did the hack it was worth about 20% performance, but at the time the fallback allocation and initial allocations didnt eat into pools in a problematic way