From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3ABC7C83003 for ; Wed, 29 Apr 2020 08:50:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0FDB420775 for ; Wed, 29 Apr 2020 08:50:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="GsDbKg9d" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726672AbgD2IuK (ORCPT ); Wed, 29 Apr 2020 04:50:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726345AbgD2IuI (ORCPT ); Wed, 29 Apr 2020 04:50:08 -0400 Received: from merlin.infradead.org (unknown [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51DCCC03C1AD; Wed, 29 Apr 2020 01:50:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=McfirHER2yliCK9xpcEcEd1SIT40pFKzGHso+arjjzQ=; b=GsDbKg9d6S9lAVnn/+3nwAs5Jr q/RY4ejijZl5Hev7SoOJXQUu4GC1BmGEyq3fFYqi89zNIncP4btsgI6B0zF4VMLjwQBQyGiaML8M1 oylzCAhztdbxb/56fnPxFpwqQ73nzJDW655pbk9oIAwnym+Og6vmAiL84RoV+98HWTi+IDxGhxHup YmJcb84Q3e0q8CvCL6aRoxPmCtQdbhKRLGeG+BfRinzeHwoR8xVdlTi/+jB5rcgb1UmPXj00WEwTk 82YEzKxEBz5kk1KdQfPhQBUG4BMXkrhUwjDSuC1etJ4E+/zZmRWhIuPVHYmA6n5W8usbmhKsRljNz OnyY+2Xg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jTiPP-0007O2-Ip; Wed, 29 Apr 2020 08:49:35 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 52A18303F45; Wed, 29 Apr 2020 10:49:33 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 3E2C820BD8FF8; Wed, 29 Apr 2020 10:49:33 +0200 (CEST) Date: Wed, 29 Apr 2020 10:49:33 +0200 From: Peter Zijlstra To: Huaixin Chang Cc: linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com, luto@amacapital.net, michal.lkml@markovi.net, mingo@redhat.com, tglx@linutronix.de, x86@kernel.org, yamada.masahiro@socionext.com Subject: Re: [PATCH 0/2] Build ORC fast lookup table in scripts/sorttable tool Message-ID: <20200429084933.GF13592@hirez.programming.kicks-ass.net> References: <20200429064626.16389-1-changhuaixin@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200429064626.16389-1-changhuaixin@linux.alibaba.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 29, 2020 at 02:46:24PM +0800, Huaixin Chang wrote: > Move building of fast lookup table from boot to sorttable tool. This saves us > 6380us boot time on Intel(R) Xeon(R) CPU E5-2682 v4 @ 2.50GHz with cores. And what does it add to the build time?