Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765223AbXE2Txo (ORCPT ); Tue, 29 May 2007 15:53:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759597AbXE2Txg (ORCPT ); Tue, 29 May 2007 15:53:36 -0400 Received: from an-out-0708.google.com ([209.85.132.244]:8260 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759913AbXE2Txf (ORCPT ); Tue, 29 May 2007 15:53:35 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=t5zPDbDN/nkgn9jsSqP2XmSegyJI9PrzHP0Gko6exF0WheWpcrUXIYcLL2XKKzRjFpmmcGw6KnMihqj22OLJi4RwW2aWPtvWNsLDoHm9igoaaHfEDkG7R0SybsJrRhzlsHi2+XIoUtm/8/CNP0UDukog6Z72qBPJO7PgZSONipw= Message-ID: <5486cca80705291253vb793caqd632f3adbb2479ad@mail.gmail.com> Date: Tue, 29 May 2007 21:53:33 +0200 From: "Antonino Ingargiola" To: "Con Kolivas" Subject: Re: [ck] 2.6.22-rc3-ck1 Cc: "ck list" , "linux kernel mailing list" In-Reply-To: <200705270800.06612.kernel@kolivas.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200705270800.06612.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1551 Lines: 51 Hi, 2007/5/27, Con Kolivas : > New test release: > > http://ck.kolivas.org/patches/pre-releases/2.6.22-rc3/2.6.22-rc3-ck1/ > > This is a resync with newer -rc and contains the updated swap prefetch code. With this patch there is a stunning difference with the no swap prefetch case on my system. With previous SP the difference was around 2 seconds, now is more than 7 seconds. Swap Prefetch OFF # ./sp_tester Ram 776388000 Swap 514040000 Total ram to be malloced: 1033408000 bytes Starting first malloc of 516704000 bytes Starting 1st read of first malloc Touching this much ram takes 1642 milliseconds Starting second malloc of 516704000 bytes Completed second malloc and free Sleeping for 60 seconds Important part - starting reread of first malloc Completed read of first malloc Timed portion 9089 milliseconds Swap Prefetch OFF # ./sp_tester Ram 776388000 Swap 514040000 Total ram to be malloced: 1033408000 bytes Starting first malloc of 516704000 bytes Starting 1st read of first malloc Touching this much ram takes 1635 milliseconds Starting second malloc of 516704000 bytes Completed second malloc and free Sleeping for 60 seconds Important part - starting reread of first malloc Completed read of first malloc Timed portion 1783 milliseconds Regards, ~ Antonio - 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/