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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A8F3C982D6 for ; Thu, 17 Sep 2026 17:36:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=S+Gop946z1JplF3H8p++/hix1FPkjFUoE2z3RPq4HeI=; b=HvhUiw+IqI5KYi 2Z5GCUwpOpSbHPDFv1KwdM6RA2qtwf/sHi5wdKqh3et9ZpXg/vBaajTwjZsspa4qT8QmI8tRWbgUB f4bK1WUcbU2lUKOwy3yu1MMiYdyM5AO92mWFCSVU8qPBEeF5KVsS/xsGSvs1CKCcQugRzJAAvDLj8 FpwdyOtHVWrzYRwPKBP6FjKdj69QZdgZjaCup0H+sVigSkgtHIz+WgidlnnopfNqNNjym+V56Xb9M LQkCOaX/kmvMH0dP689wn3Iz4008Syo1ewaWU0w24CGEJXyCGx4lyiZjk/Bsby5d4LALr3IeAkk1V 16AOwOBbPtfg/O6OiapQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7G2G-0000000C67x-44BF; Thu, 17 Sep 2026 17:36:36 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7G2F-0000000C67h-04Kg; Thu, 17 Sep 2026 17:36:35 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id AFCBB4396B; Thu, 17 Sep 2026 17:36:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9279B1F00893; Thu, 17 Sep 2026 17:36:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789666594; bh=jpy/yjEj4aDooyvICNTbdTtEq9cxmPnAGXVj2NFxZEs=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=L1SJOQU/7zwR2k1r6QQvFbRSb27nGC3gYV7j01JYcrg5+S9rs+/hLSEJEuJHxMTKJ 0fTVstSev5PwoNGUQ7/RLh3nO9HabXy9209Zn3Fcc1Yqqk30IqYiODTVrDJIB7nmYs qN5agK3p4SVYFaZTx5zNlmgZs17aBLbUtrKaXz1b8p1aJQS7wNBwY93H9vSNsQG58A Q9nW/cDcWh89WgjM99JxsOGYeAr4Va05Fm7DmR0ejnSn1DfF4etaEEcOAwoVPrCCdB TbrkgAjCCEz99A4aDim3hXRBkQWuEvUY7vuK90fmeIP0DsRTLi8zsgGMhM1mhnbaxP OkVSed7QJUM5Q== Date: Thu, 17 Sep 2026 18:36:18 +0100 From: "Lorenzo Stoakes (ARM)" To: Linus Torvalds Cc: Nathan Chancellor , Nicolas Schier , Nick Desaulniers , Bill Wendling , Justin Stitt , Masahiro Yamada , Alexey Gladkov , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Arnd Bergmann , Catalin Marinas , Will Deacon , Mark Rutland , Ard Biesheuvel , Ilias Apalodimas , Josh Poimboeuf , Peter Zijlstra , Miguel Ojeda , Boqun Feng , Gary Guo , =?utf-8?B?QmrDtnJu?= Roy Baron , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Daniel Almeida , Tamir Duberstein , Alexandre Courbot , Onur =?utf-8?B?w5Z6a2Fu?= , Jonathan Corbet , Randy Dunlap , Kees Cook , "Gustavo A. R. Silva" , linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-riscv@lists.infradead.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org, Jens Axboe , linux-hardening@vger.kernel.org Subject: Re: [PATCH v3 00/20] kbuild: significantly speed up kernel builds Message-ID: References: <20260917-build-speedup-v3-0-9ecf4163ff36@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Thu, Sep 17, 2026 at 10:15:26AM -0700, Linus Torvalds wrote: > On Thu, 17 Sept 2026 at 09:06, Lorenzo Stoakes (ARM) wrote: > > > > == defconfig FULL build == > > > > before after delta > > ---------------------------------- > > Threadripper, gcc 32.5s 26.3s -6.1s (-19%) > > Threadripper, clang 34.5s 27.2s -7.3s (-21%) > > EPYC, gcc 28.7s 20.6s -8.1s (-28%) > > EPYC, clang 39.8s 32.2s -7.6s (-19%) > > M2, gcc 519.3s 512.4s -6.9s (-1%) > > M2, clang 634.5s 569.4s -65.1s (-10%) > > There's something odd going on with that M2 gcc build. Why is it such > an odd duck? Ugh dear lord I think the LLM somehow corrupted the numbers... Let me re-run those myself locally and come back with the actual times! (I didn't do an allmodconfig out of pure impatience but might take the time to do that too) > > Linus -- Cheers, Lorenzo _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv