Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753941AbYFFJTa (ORCPT ); Fri, 6 Jun 2008 05:19:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752178AbYFFJTU (ORCPT ); Fri, 6 Jun 2008 05:19:20 -0400 Received: from brick.kernel.dk ([87.55.233.238]:1033 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752136AbYFFJTU (ORCPT ); Fri, 6 Jun 2008 05:19:20 -0400 Date: Fri, 6 Jun 2008 11:19:17 +0200 From: Jens Axboe To: Jan Engelhardt Cc: Fausto Richetti Blanco , linux-kernel@vger.kernel.org, miquels@cistron.nl, riel@redhat.com Subject: Re: Pipe buffers' limit of 16 * 4K Message-ID: <20080606091916.GM5757@kernel.dk> References: <20080523205630.444fe2b9@bree.surriel.com> <1212067164.8621.3.camel@localhost.localdomain> <20080530103531.GT25504@kernel.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 899 Lines: 29 On Thu, Jun 05 2008, Jan Engelhardt wrote: > > On Friday 2008-05-30 12:35, Jens Axboe wrote: > > > >I have an old patch that does that, I just looked it up and it was last > >updated for 2.6.23. It uses fcntl() with F_SETPIPE_SZ for getting and > >setting the pipe size. > > > >Patch updated, the below is the current Linus kernel. > > Can you merge it? I could, but I think two key things are missing: - Is fcntl() the interface we want for changing the pipe size? - So far, no real problems or performance increases have been demonstrated. I'd rather not attempt to push this until the two things have been addressed/discussed. -- Jens Axboe -- 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/