Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762780AbXE1W5R (ORCPT ); Mon, 28 May 2007 18:57:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751358AbXE1W5H (ORCPT ); Mon, 28 May 2007 18:57:07 -0400 Received: from wa-out-1112.google.com ([209.85.146.182]:10100 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751181AbXE1W5E (ORCPT ); Mon, 28 May 2007 18:57:04 -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=P59I+UR6NXIQzD9aP7JnreIYxSICLQyXDGG+ZHwgJBweVRXAe2Rm8ngVhckenRzeTRYiWdVbmwh+lrDAmGne4cXHkF7DbZ7w1vicMOxyg/ILrH3q0AwXnwApiFRyVcspHo5wQvm3wf3Hm18hc3qUN+jYLgqFK2mnc1wEbQrF+og= Message-ID: Date: Mon, 28 May 2007 15:57:04 -0700 From: "Bret Towe" To: "Nitin Gupta" Subject: Re: [RFC] LZO de/compression support - take 6 Cc: lkml , linux-mm-cc@laptop.org, linuxcompressed-devel@lists.sourceforge.net, "Andrew Morton" , "Daniel Hazelton" , "Richard Purdie" , "Satyam Sharma" In-Reply-To: <4cefeab80705280740l36c00bf8t4a6f5b426a7a380a@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <4cefeab80705280734i37df1742k6738cd4200813684@mail.gmail.com> <4cefeab80705280740l36c00bf8t4a6f5b426a7a380a@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1793 Lines: 58 On 5/28/07, 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 > > > > 10000 run averages: 'Tiny LZO': Combined: 112.6642 usec Compression: 56.3321 usec Decompression: 56.3321 usec 'miniLZO': Combined: 77.6642 usec Compression: 56.3416 usec Decompression: 21.3226 usec now the interesting bit I thought was the following root@mini:/usr/src/lzo1x-test-4# ./fulltest [test_lzo.c::compress (93)] run took 42 microseconds [test_lzo.c::decompress (127)] run took 20 microseconds root@mini:/usr/src/lzo1x-test-4# ./tinytest [test.c::compress (91)] run took 44 microseconds [test.c::decompress (117)] BUG: lzo1x_decompress has failed ( t == -6 ) [test.c::main (149)] BUG: Decompression routine failure - 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/