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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A070C7EE23 for ; Fri, 9 Jun 2023 01:00:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230049AbjFIA7q (ORCPT ); Thu, 8 Jun 2023 20:59:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55218 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231710AbjFIA7p (ORCPT ); Thu, 8 Jun 2023 20:59:45 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9EE5026B0 for ; Thu, 8 Jun 2023 17:59:43 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-babb79a17b8so1749602276.0 for ; Thu, 08 Jun 2023 17:59:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1686272383; x=1688864383; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=kfRq4neZrPjb9Lck7talXrCmxVTayuyWN8AeTYnUB40=; b=FMN3dhDuy89W3YL34iGrOcxlPjg1bzMkLLXo1TdyO66RGSvbHlps7gdvHr44ss3LGk MR0VFD1DRCFTNC9tyqK5ReMEOiPx2JNiCbTUTyUv9FMGeK9nCNoAU6WnXWYbBC+Dw27V niwud/7XN7pCGjqFT4B3VS+EBw+uLus4pO0EQ6k6SszjrU1zFcD9yQh/qzHLrmZknfvX XuK4cXbAzi1gsEYKdbrLfMfylLB6JTl2vYXAwWR55yMmpFjT1Lojk1XODC7sstmSmHo4 uXWebCC18fjzj/uapeQiZlzXqVxfdSytOTcShko5dqCAeC6bbLhPv2RLA/d/FJo+pzzy govw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686272383; x=1688864383; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=kfRq4neZrPjb9Lck7talXrCmxVTayuyWN8AeTYnUB40=; b=KG6eqZgk+OEf82x4gjl412SSDXAerzjhTQdF103tG2fDNjOtwRq5zRQAMr1udb8AyA JXUQxlX6Kfo+v1GppAGOG0J4zIc4nbW8BpKzd1SDQSiWWuq3rOfu8SWGCtuTDurUtt/i 4W50kr57Vux1cPEQ3CkHa9mDYf6StCfWsinYh0mf9GHKMVHgh/SlbPc4iKJKHdWe4+TD cPX/HlFQVJXqLaCMabfnTd24UN5IJgyQjumbAdUJCQo6NH8k08SsVIJI7R+7Pa2K/7+T 6vjX5ii3Cc/RBSY/oMa9bO2dau+VgbCZIZoel+CRZdfNQB6r/0u37lx9MepPlqn/J0lZ w02Q== X-Gm-Message-State: AC+VfDwMvNWhHu9tv4YLrPmHq+lyrGdkuzaC0pfxKVMKHjkIcK945wqG sDahhFSZutAwX8uhsYrX7mYFOl0pjjI= X-Google-Smtp-Source: ACHHUZ6QOfrw0l3bdpvvlmXUNnamszuXXqEgiHjhlXZ1bthx0t+lBEyPW/rr7RnEuOk5SiS3J1yRldpoYHg= X-Received: from yuzhao.bld.corp.google.com ([2620:15c:183:200:f582:c9e5:6c95:4461]) (user=yuzhao job=sendgmr) by 2002:a5b:784:0:b0:bad:99d:f087 with SMTP id b4-20020a5b0784000000b00bad099df087mr697256ybq.6.1686272382836; Thu, 08 Jun 2023 17:59:42 -0700 (PDT) Date: Thu, 8 Jun 2023 18:59:39 -0600 In-Reply-To: <20230526234435.662652-1-yuzhao@google.com> Message-Id: <20230609005940.42722-1-yuzhao@google.com> Mime-Version: 1.0 References: <20230526234435.662652-1-yuzhao@google.com> X-Mailer: git-send-email 2.41.0.162.gfafddb0af9-goog Subject: kvm/powerpc: memcached benchmark From: Yu Zhao To: Andrew Morton , Paolo Bonzini Cc: 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 , Marc Zyngier , 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 Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org TLDR ==== Memcached achieved 10% more operations per second (in ~4 hours) after this patchset [1]. Hardware ======== HOST $ lscpu Architecture: ppc64le Byte Order: Little Endian CPU(s): 184 On-line CPU(s) list: 0-183 Model name: POWER9 (raw), altivec supported Model: 2.2 (pvr 004e 1202) Thread(s) per core: 4 Core(s) per socket: 23 Socket(s): 2 CPU max MHz: 3000.0000 CPU min MHz: 2300.0000 Caches (sum of all): L1d: 1.4 MiB (46 instances) L1i: 1.4 MiB (46 instances) L2: 12 MiB (24 instances) L3: 240 MiB (24 instances) NUMA: NUMA node(s): 2 NUMA node0 CPU(s): 0-91 NUMA node1 CPU(s): 92-183 Vulnerabilities: Itlb multihit: Not affected L1tf: Mitigation; RFI Flush, L1D private per thread Mds: Not affected Meltdown: Mitigation; RFI Flush, L1D private per thread Mmio stale data: Not affected Retbleed: Not affected Spec store bypass: Mitigation; Kernel entry/exit barrier (eieio) Spectre v1: Mitigation; __user pointer sanitization, ori31 speculation barrier enabled Spectre v2: Mitigation; Indirect branch serialisation (kernel only), Indirect branch cache disabled, Software link stack flush Srbds: Not affected Tsx async abort: Not affected HOST $ numactl -H available: 2 nodes (0-1) node 0 cpus: 0-91 node 0 size: 261659 MB node 0 free: 259152 MB node 1 cpus: 92-183 node 1 size: 261713 MB node 1 free: 261076 MB node distances: node 0 1 0: 10 40 1: 40 10 HOST $ cat /sys/class/nvme/nvme0/model INTEL SSDPF21Q800GB HOST $ cat /sys/class/nvme/nvme0/numa_node 0 Software ======== HOST $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=22.04 DISTRIB_CODENAME=jammy DISTRIB_DESCRIPTION="Ubuntu 22.04 LTS" HOST $ uname -a Linux ppc 6.3.0 #1 SMP Sun Jun 4 18:26:37 UTC 2023 ppc64le ppc64le ppc64le GNU/Linux HOST $ cat /proc/swaps Filename Type Size Used Priority /dev/nvme0n1p2 partition 466838272 0 -2 HOST $ cat /sys/kernel/mm/lru_gen/enabled 0x0009 HOST $ cat /sys/kernel/mm/transparent_hugepage/enabled always madvise [never] HOST $ cat /sys/kernel/mm/transparent_hugepage/defrag always defer defer+madvise madvise [never] HOST $ qemu-system-ppc64 --version QEMU emulator version 6.2.0 (Debian 1:6.2+dfsg-2ubuntu6.6) Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers GUEST $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=22.04 DISTRIB_CODENAME=jammy DISTRIB_DESCRIPTION="Ubuntu 22.04.1 LTS" GUEST $ cat /etc/memcached.conf ... -t 92 -m 262144 -B binary -s /var/run/memcached/memcached.sock -a 0766 GUEST $ memtier_benchmark -v memtier_benchmark 1.4.0 Copyright (C) 2011-2022 Redis Ltd. This is free software. You may redistribute copies of it under the terms of the GNU General Public License . There is NO WARRANTY, to the extent permitted by law. Procedure ========= HOST $ sudo numactl -N 0 -m 0 qemu-system-ppc64 \ -M pseries,accel=kvm,kvm-type=HV -cpu host -smp 92 -m 270g -nographic -nic user \ -drive if=virtio,format=raw,file=/dev/nvme0n1p1 GUEST $ memtier_benchmark -S /var/run/memcached/memcached.sock \ -P memcache_binary -c 1 -t 92 --pipeline 1 --ratio 1:0 \ --key-minimum=1 --key-maximum=120000000 --key-pattern=P:P \ -n allkeys -d 2000 GUEST $ memtier_benchmark -S /var/run/memcached/memcached.sock \ -P memcache_binary -c 1 -t 92 --pipeline 1 --ratio 0:1 \ --key-minimum=1 --key-maximum=120000000 --key-pattern=R:R \ -n allkeys --randomize --distinct-client-seed Results ======= Before [1] After Change ------------------------------------------------- Ops/sec 721586.10 800210.12 +10% Avg. Latency 0.12546 0.11260 -10% p50 Latency 0.08700 0.08700 N/C p99 Latency 0.28700 0.24700 -13% Notes ===== [1] "mm: rmap: Don't flush TLB after checking PTE young for page reference" was included so that the comparison is apples to Apples. https://lore.kernel.org/r/20220706112041.3831-1-21cnbao@gmail.com/