Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759066AbXE1PbR (ORCPT ); Mon, 28 May 2007 11:31:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752041AbXE1PbE (ORCPT ); Mon, 28 May 2007 11:31:04 -0400 Received: from mailout.stusta.mhn.de ([141.84.69.5]:46953 "EHLO mailhub.stusta.mhn.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751662AbXE1PbB (ORCPT ); Mon, 28 May 2007 11:31:01 -0400 Date: Mon, 28 May 2007 17:30:55 +0200 From: Adrian Bunk To: Nitin Gupta Cc: lkml , linux-mm-cc@laptop.org, linuxcompressed-devel@lists.sourceforge.net, Andrew Morton , Daniel Hazelton , Richard Purdie , Bret Towe , Satyam Sharma Subject: Re: [RFC] LZO de/compression support - take 6 Message-ID: <20070528153055.GN3899@stusta.de> References: <4cefeab80705280734i37df1742k6738cd4200813684@mail.gmail.com> <4cefeab80705280740l36c00bf8t4a6f5b426a7a380a@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <4cefeab80705280740l36c00bf8t4a6f5b426a7a380a@mail.gmail.com> User-Agent: Mutt/1.5.15+20070412 (2007-04-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1503 Lines: 54 On Mon, May 28, 2007 at 08:10:31PM +0530, Nitin Gupta wrote: > Hi, > > Attached is tester code used for testing. > (developed by Daniel Hazelton -- modified slightly to now use 'take 6' > version for 'TinyLZO') > > Cheers, > Nitin > > On 5/28/07, Nitin Gupta wrote: >> (Using tester program from Daniel) >> >> Following compares this kernel port ('take 6') vs original miniLZO code: >> >> 'TinyLZO' refers to this kernel port. >> >> 10000 run averages: >> 'Tiny LZO': >> Combined: 61.2223 usec >> Compression: 41.8412 usec >> Decompression: 19.3811 usec >> 'miniLZO': >> Combined: 66.0444 usec >> Compression: 46.6323 usec >> Decompression: 19.4121 usec >> >> Result: >> Overall: TinyLZO is 7.3% faster >> Compressor: TinyLZO is 10.2% faster >> Decompressor: TinyLZO is 0.15% faster So your the compressor of your version runs 10.2% faster than the original version. That's a huge difference. Why exactly is it that much faster? cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed - 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/