From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH 5/5] Use kwset in grep Date: Sat, 13 Feb 2010 16:58:27 +0100 Message-ID: <4B76CC23.8040605@gnu.org> References: <20100213141558.22851.13660.stgit@fredrik-laptop> <20100213142110.GF9543@fredrik-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: git@vger.kernel.org, Junio C Hamano To: Fredrik Kuivinen X-From: git-owner@vger.kernel.org Sat Feb 13 17:05:23 2010 Return-path: Envelope-to: gcvg-git-2@lo.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1NgKUk-0003zF-Vn for gcvg-git-2@lo.gmane.org; Sat, 13 Feb 2010 17:05:23 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753793Ab0BMQFR (ORCPT ); Sat, 13 Feb 2010 11:05:17 -0500 Received: from mail-fx0-f227.google.com ([209.85.220.227]:52457 "EHLO mail-fx0-f227.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752033Ab0BMQFP (ORCPT ); Sat, 13 Feb 2010 11:05:15 -0500 Received: by fxm27 with SMTP id 27so60521fxm.25 for ; Sat, 13 Feb 2010 08:05:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :content-type:content-transfer-encoding; bh=LRGg+QjGaWc4akHutT2Tj2nKVhzbFC7QpyT13iW5f9I=; b=mkGd/W+IazpVoJgOa+7xNjTugm5pIllg3B/5slEYxNLPYXDbUeg4E53S+d3oSe6vO0 5Ab8/i6mbnBTvr3rmkwWK4qRGmI7hmRUJw4WumlLxt0QsFZGJjVHi2CwCDg2ZK5njZtM pL/zfVV9KRvGHgGqP5vU0s194pwzDcJtF3oN4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=fyE4ArXtJJkfOmZbH72XwAoR1wEL4lqLsDBgoEr3iATzvIx6bhD0quYA0Q2HSfEmKn jyTCOD5xYJR2sqMMy5KpfzeC5skdsJMbGMgaY1172rStmX4pcLG1q+QJKp521sS8qouq cPvI7r4R1k/ZiMdsR0kEPnGlrJJjHlDAgjkqU= Received: by 10.223.2.216 with SMTP id 24mr3250497fak.72.1266076711290; Sat, 13 Feb 2010 07:58:31 -0800 (PST) Received: from yakj.usersys.redhat.com ([85.93.118.17]) by mx.google.com with ESMTPS id 2sm7345437fks.43.2010.02.13.07.58.29 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sat, 13 Feb 2010 07:58:30 -0800 (PST) User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7) Gecko/20100120 Fedora/3.0.1-1.fc12 Lightning/1.0b2pre Thunderbird/3.0.1 In-Reply-To: <20100213142110.GF9543@fredrik-laptop> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: On 02/13/2010 03:21 PM, Fredrik Kuivinen wrote: > Best of five runs in the linux repository: > > before: > > $ time git grep qwerty > drivers/char/keyboard.c: "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */ > > real 0m1.065s > user 0m1.400s > sys 0m0.536s > > > after: > > $ time git grep qwerty > drivers/char/keyboard.c: "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */ > > real 0m0.621s > user 0m0.560s > sys 0m0.564s > > So we gain about 40% by using the kwset code. I like it, thanks for doing this! Paolo