Date: Wed, 4 Aug 1999 21:37:12 -0700 From: Arun Sharma <adsharma@home.com> To: Dag-Erling Smorgrav <des@flood.ping.uio.no> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Results of investigating optimizing calloc()... Message-ID: <19990804213712.A31563@home.com> In-Reply-To: <xzpemhjpzac.fsf@flood.ping.uio.no>; from Dag-Erling Smorgrav on Wed, Aug 04, 1999 at 01:20:59PM %2B0200 References: <001e01bedde3$d1af64c0$291c453f@kbyanc.alcnet.com> <xzpemhjpzac.fsf@flood.ping.uio.no>
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On Wed, Aug 04, 1999 at 01:20:59PM +0200, Dag-Erling Smorgrav wrote: > "Kelly Yancey" <kbyanc@alcnet.com> 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. On a Pentium III, you can use the new instructions to do page zero'ing without allocating cache lines. -Arun To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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