From owner-freebsd-hackers Wed Aug 4 4:21:12 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from flood.ping.uio.no (flood.ping.uio.no [129.240.78.31]) by hub.freebsd.org (Postfix) with ESMTP id B78B114D18 for ; Wed, 4 Aug 1999 04:21:09 -0700 (PDT) (envelope-from des@flood.ping.uio.no) Received: (from des@localhost) by flood.ping.uio.no (8.9.3/8.9.1) id NAA22036; Wed, 4 Aug 1999 13:20:59 +0200 (CEST) (envelope-from des) To: "Kelly Yancey" Cc: Subject: Re: Results of investigating optimizing calloc()... References: <001e01bedde3$d1af64c0$291c453f@kbyanc.alcnet.com> From: Dag-Erling Smorgrav Date: 04 Aug 1999 13:20:59 +0200 In-Reply-To: "Kelly Yancey"'s message of "Tue, 3 Aug 1999 15:10:15 -0400" Message-ID: Lines: 11 X-Mailer: Gnus v5.5/Emacs 19.34 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Kelly Yancey" writes: > [...] Which reminds me - has anyone thought of using DMA for zeroing pages, to avoid cache invalidation? The idea is to keep a chunk of zeroes on disk and DMA it into memory instead of clearing pages "manually". This assumes your disk supports DMA, of course. DES -- Dag-Erling Smorgrav - des@flood.ping.uio.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message