Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 8 Nov 2001 18:00:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 8 Nov 2001 18:00:34 -0500 Received: from ns.suse.de ([213.95.15.193]:56324 "HELO Cantor.suse.de") by vger.kernel.org with SMTP id ; Thu, 8 Nov 2001 18:00:30 -0500 To: Ingo Molnar Cc: linux-kernel@vger.kernel.org Subject: Re: speed difference between using hard-linked and modular drives? In-Reply-To: From: Andi Kleen Date: 09 Nov 2001 00:00:19 +0100 In-Reply-To: Ingo Molnar's message of "8 Nov 2001 17:46:06 +0100" Message-ID: Lines: 12 X-Mailer: Gnus v5.7/Emacs 20.7 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar writes: > > we should fix this by trying to allocate continuous physical memory if > possible, and fall back to vmalloc() only if this allocation fails. Check -aa. A patch to do that has been in there for some time now. -Andi P.S.: It makes a measurable difference with some Oracle benchmarks with the Qlogic driver. - 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/