From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 4 Feb 2005 09:02:10 -0800 (PST) From: Christoph Lameter Subject: Re: A scrub daemon (prezeroing) In-Reply-To: <16899.15980.791820.132469@cargo.ozlabs.ibm.com> Message-ID: References: <1106828124.19262.45.camel@hades.cambridge.redhat.com> <20050202153256.GA19615@logos.cnet> <20050202163110.GB23132@logos.cnet> <16898.46622.108835.631425@cargo.ozlabs.ibm.com> <16899.2175.599702.827882@cargo.ozlabs.ibm.com> <16899.15980.791820.132469@cargo.ozlabs.ibm.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Paul Mackerras Cc: Rik van Riel , Marcelo Tosatti , David Woodhouse , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@osdl.org List-ID: On Fri, 4 Feb 2005, Paul Mackerras wrote: > > Yes but its a short burst that only occurs very infrequestly and it takes > > It occurs just as often as we clear pages in the page fault handler. > We aren't clearing any fewer pages by prezeroing, we are just clearing > them a bit earlier. scrubd clears pages of orders 7-4 by default. That means 2^4 to 2^7 pages are cleared at once. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org