Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 12 Mar 2001 15:29:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 12 Mar 2001 15:29:04 -0500 Received: from colorfullife.com ([216.156.138.34]:28676 "EHLO colorfullife.com") by vger.kernel.org with ESMTP id ; Mon, 12 Mar 2001 15:28:58 -0500 Message-ID: <001b01c0ab33$07ff5670$5517fea9@local> From: "Manfred Spraul" To: Cc: In-Reply-To: <200103122008.XAA11117@ms2.inr.ac.ru> Subject: Re: Feedback for fastselect and one-copy-pipe Date: Mon, 12 Mar 2001 21:28:38 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: > > > freebsd > > Very funny, the idea is borrowed from there. > > As you could understand your patch kills it. PAGE_SIZE is one of the most > frequently used transfer unit. > freebsd-4.0 doesn't use direct transfers for PAGE_SIZE'd pipe write()s: it uses MINDIRECT=8192. (and PIPE_BUF is 512, so 4096 was possible for them) -- Manfred - 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/