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 9DD82C7EE29 for ; Fri, 9 Jun 2023 13:04:57 +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:MIME-Version:References:In-Reply-To: Subject:Cc:To:From:Message-ID:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=VRLJaOG9UqP8ij0FF5dKpGPqaaRWMMg0Rz6bwXalKbw=; b=Gl76vIVDPRlt3A GQJsHX6BFuWqJpZZtbm3ehD5f5sFEhf/WMeSawMcJsvc5xYd9JNXOjVy3/jo40wptt46jVLQeY24z NVlXDi0ZpI8bty79cnwJqEGFAwWmWyCvz5leUAnBXoMtyrEQe92yqlUHG2jiP5FzIjun5u2/dmitF bYYUBfu+L3gL3DTWuy6wAzeKjpXRYzXZUmhiXuXrwHewCFLEfXICMg1fqPfdUhiq6x3+FpMOsD6PW I9IA2ql+lqsj5e+2ZikKVtoHKOQt5WzaJ/HPRrnxaVyCuxLFEyBZsw7ZSzuBQ/+cNDyWt0Zkubqj7 wfu7o4LagMPLdbcHT1tw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1q7bnB-00D4m6-0m; Fri, 09 Jun 2023 13:04:37 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1q7bn9-00D4l8-0I for linux-arm-kernel@lists.infradead.org; Fri, 09 Jun 2023 13:04:36 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9A666657EA; Fri, 9 Jun 2023 13:04:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC01EC433EF; Fri, 9 Jun 2023 13:04:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686315874; bh=90rVHTRs/3F5on7zL7vvDRpDwafaR4yvoFsAW9sVsUU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=ct18ILo60TPRsRZeRF0MA6HqVV541momQ/jF4nftPln9ac11WPptBUohnWBmUvWqE vnbarfiPcuydHingkmODEEfgyBqMNPOYeP2WxeWyeZBtXUQLPWlTQiK3YoRCoQuOkz ykp2yROWej+XaTRvcPNC1Mj4JCwFi/idPxZcvWKMzoJB4BmjIGu9z7nSlgQ6TTTjIl qP4PTzdDzoU3b8crpqEvZ0W3ktzTOLFYBKjsvJzANfoNoi8mgwX007iMF+sc9WNoo4 c5+GV/8GYH3NerKeEbysr3Xjw/+GD6dgRglU5pvXYup5qB/zjHokXJytURgg3jzfRS C5Xro19M414WQ== Received: from 152.5.30.93.rev.sfr.net ([93.30.5.152] helo=wait-a-minute.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1q7bn5-0045UR-GR; Fri, 09 Jun 2023 14:04:31 +0100 Date: Fri, 09 Jun 2023 14:04:27 +0100 Message-ID: <873530okh0.wl-maz@kernel.org> From: Marc Zyngier To: Yu Zhao Cc: Andrew Morton , Paolo Bonzini , Alistair Popple , Anup Patel , Ben Gardon , Borislav Petkov , Catalin Marinas , Chao Peng , Christophe Leroy , Dave Hansen , Fabiano Rosas , Gaosheng Cui , Gavin Shan , "H. Peter Anvin" , Ingo Molnar , James Morse , "Jason A. Donenfeld" , Jason Gunthorpe , Jonathan Corbet , Masami Hiramatsu , Michael Ellerman , Michael Larabel , Mike Rapoport , Nicholas Piggin , Oliver Upton , Paul Mackerras , Peter Xu , Sean Christopherson , Steven Rostedt , Suzuki K Poulose , Thomas Gleixner , Thomas Huth , Will Deacon , Zenghui Yu , kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, linux-mm@google.com Subject: Re: kvm/arm64: Spark benchmark In-Reply-To: <20230609005935.42390-1-yuzhao@google.com> References: <20230526234435.662652-1-yuzhao@google.com> <20230609005935.42390-1-yuzhao@google.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/28.2 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 93.30.5.152 X-SA-Exim-Rcpt-To: yuzhao@google.com, akpm@linux-foundation.org, pbonzini@redhat.com, apopple@nvidia.com, anup@brainfault.org, bgardon@google.com, bp@alien8.de, catalin.marinas@arm.com, chao.p.peng@linux.intel.com, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, farosas@linux.ibm.com, cuigaosheng1@huawei.com, gshan@redhat.com, hpa@zytor.com, mingo@redhat.com, james.morse@arm.com, Jason@zx2c4.com, jgg@ziepe.ca, corbet@lwn.net, mhiramat@kernel.org, mpe@ellerman.id.au, michael@michaellarabel.com, rppt@kernel.org, npiggin@gmail.com, oliver.upton@linux.dev, paulus@ozlabs.org, peterx@redhat.com, seanjc@google.com, rostedt@goodmis.org, suzuki.poulose@arm.com, tglx@linutronix.de, thuth@redhat.com, will@kernel.org, yuzenghui@huawei.com, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, linux-m m@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230609_060435_207332_8AD69B1D X-CRM114-Status: GOOD ( 15.02 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 09 Jun 2023 01:59:35 +0100, Yu Zhao wrote: > > TLDR > ==== > Apache Spark spent 12% less time sorting four billion random integers twenty times (in ~4 hours) after this patchset [1]. Why are the 3 architectures you have considered being evaluated with 3 different benchmarks? I am not suspecting you to have cherry-picked the best results, but I'd really like to see a variety of benchmarks that exercise this stuff differently. Thanks, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel