From patchwork Mon Nov 14 07:41:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jing Zhang X-Patchwork-Id: 13041910 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 69C66C4332F for ; Mon, 14 Nov 2022 07:43:59 +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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5Pot4+VNopTrzclwkgSPiOj8eSmsQZT1Cf3F7qBnlOo=; b=ZwGkp7nvpUTY76 NMhyC6i3tYiYzVUl8B2Q+s7oG0xMYdCIA9X6m1aloH4KELmWY9mL/REYcqPa3jfeNX85B6T30OB1q xW5tVm6XS2hndhhIyKOiG6ZQ4s6f5+netM8jzksBQgSllZSddH6VR857HI/PxTnWG1mpikVx4l88d SMNRAKzxq/TlMy+7RyeX/XVpwjPnSXFp9ZaGQWk5T8hErugrf5N0dQDA+A1sOW7LMzNXDwulll69a JFrgvtqr2i8O+wXPpFjLOqXh1yew2hw9kUEf3CPsIzBnzefB+AjF/OsVvknQTMCattYy5uqqcEVVS wZk06omBjrxr/ZYV2N9g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ouU7N-00GW0h-8u; Mon, 14 Nov 2022 07:42:57 +0000 Received: from out30-43.freemail.mail.aliyun.com ([115.124.30.43]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ouU7A-00GVuS-Nk for linux-arm-kernel@lists.infradead.org; Mon, 14 Nov 2022 07:42:47 +0000 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R611e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045170;MF=renyu.zj@linux.alibaba.com;NM=1;PH=DS;RN=19;SR=0;TI=SMTPD_---0VUjWhzm_1668411748; Received: from j66e01291.sqa.eu95.tbsite.net(mailfrom:renyu.zj@linux.alibaba.com fp:SMTPD_---0VUjWhzm_1668411748) by smtp.aliyun-inc.com; Mon, 14 Nov 2022 15:42:36 +0800 From: Jing Zhang To: linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, John Garry , Will Deacon , James Clark , Mike Leach , Leo Yan Cc: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Andrew Kilroy , Shuai Xue , Zhuo Song , Jing Zhang Subject: [RFC PATCH v2 0/6] Add metrics for neoverse-n2 Date: Mon, 14 Nov 2022 15:41:54 +0800 Message-Id: <1668411720-3581-1-git-send-email-renyu.zj@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1667214694-89839-1-git-send-email-renyu.zj@linux.alibaba.com> References: <1667214694-89839-1-git-send-email-renyu.zj@linux.alibaba.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221113_234244_971304_60D56379 X-CRM114-Status: UNSURE ( 9.19 ) X-CRM114-Notice: Please train this message. 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: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Changes since v1: - Corrected formula for topdown L1 due to wrong counts for stall_slot and stall_slot_frontend; - Link: https://lore.kernel.org/all/1667214694-89839-1-git-send-email-renyu.zj@linux.alibaba.com/ This series add six metricgroups for neoverse-n2, among which, the formula of topdown L1 is from the document: https://documentation-service.arm.com/static/60250c7395978b529036da86?token= Due to the wrong count of stall_slot and stall_slot_frontend in neoverse-n2, the real stall_slot and real stall_slot_frontend need to subtract cpu_cycles, so when calculating the topdownL1 metrics, stall_slot and stall_slot_frontend are corrected. Since neoverse-n2 does not yet support topdown L2, metricgroups such as Cache, TLB, Branch, InstructionsMix, and PEutilization are added to help further analysis of performance bottlenecks. with this series on neoverse-n2: $./perf list ... Metric Groups: Branch: branch_miss_pred_rate [The rate of branches mis-predited to the overall branches] branch_mpki [The rate of branches mis-predicted per kilo instructions] branch_pki [The rate of branches retired per kilo instructions] Cache: l1d_cache_miss_rate [The rate of L1 D-Cache misses to the overall L1 D-Cache] l1d_cache_mpki [The rate of L1 D-Cache misses per kilo instructions] ... $sudo ./perf stat -a -M TLB sleep 1 Performance counter stats for 'system wide': 35,861,936 L1I_TLB # 0.00 itlb_walk_rate (74.91%) 5,661 ITLB_WALK (74.91%) 97,279,240 INST_RETIRED # 0.07 itlb_mpki (74.91%) 6,851 ITLB_WALK (74.91%) 26,391 DTLB_WALK # 0.00 dtlb_walk_rate (75.07%) 35,585,545 L1D_TLB (75.07%) 85,923,244 INST_RETIRED # 0.35 dtlb_mpki (75.11%) 29,992 DTLB_WALK (75.11%) 1.003450755 seconds time elapsed $sudo ./perf stat -M TopDownL1 false_sharing 2 Performance counter stats for 'false_sharing 2': 3,388,884,713 cpu_cycles # 0.05 retiring # 0.00 wasted (66.59%) 19,495,064,576 stall_slot (66.59%) 838,235,126 op_spec (66.59%) 836,787,162 op_retired (66.59%) 3,380,520,038 cpu_cycles # 0.29 frontend_bound (67.15%) 8,267,545,049 stall_slot_frontend (67.15%) 3,389,138,804 cpu_cycles # 0.67 backend_bound (66.66%) 11,337,766,816 stall_slot_backend (66.66%) 0.442572628 seconds time elapsed 1.235153000 seconds user 0.000000000 seconds sys Jing Zhang (6): perf vendor events arm64: Add topdown L1 metrics for neoverse-n2 perf vendor events arm64: Add TLB metrics for neoverse-n2 perf vendor events arm64: Add cache metrics for neoverse-n2 perf vendor events arm64: Add branch metrics for neoverse-n2 perf vendor events arm64: Add PE utilization metrics for neoverse-n2 perf vendor events arm64: Add instruction mix metrics for neoverse-n2 .../arch/arm64/arm/neoverse-n2/metrics.json | 247 +++++++++++++++++++++ 1 file changed, 247 insertions(+) create mode 100644 tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json