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 92110C3DA7D for ; Tue, 3 Jan 2023 11:39:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233046AbjACLj4 (ORCPT ); Tue, 3 Jan 2023 06:39:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230006AbjACLj4 (ORCPT ); Tue, 3 Jan 2023 06:39:56 -0500 Received: from out30-57.freemail.mail.aliyun.com (out30-57.freemail.mail.aliyun.com [115.124.30.57]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38266B6F; Tue, 3 Jan 2023 03:39:54 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R431e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045176;MF=renyu.zj@linux.alibaba.com;NM=1;PH=DS;RN=21;SR=0;TI=SMTPD_---0VYn6lZg_1672745978; Received: from srmbuffer011165236051.sqa.eu95(mailfrom:renyu.zj@linux.alibaba.com fp:SMTPD_---0VYn6lZg_1672745978) by smtp.aliyun-inc.com; Tue, 03 Jan 2023 19:39:50 +0800 From: Jing Zhang To: John Garry , Ian Rogers , Xing Zhengjun , Will Deacon , James Clark , Mike Leach , Leo Yan Cc: linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, 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: [PATCH v5 0/6] Add metrics for neoverse-n2 Date: Tue, 3 Jan 2023 19:39:30 +0800 Message-Id: <1672745976-2800146-1-git-send-email-renyu.zj@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Changes since v4: - Add MPKI/PKI “ScaleUnit”; - Add acked-by from Ian Rogers; - Link: https://lore.kernel.org/all/1671799045-1108027-1-git-send-email-renyu.zj@linux.alibaba.com/ Changes since v3: - Add ipc_rate metric; - Drop the PublicDescription; - Describe PEutilization metrics in more detail; - Link: https://lore.kernel.org/all/1669310088-13482-1-git-send-email-renyu.zj@linux.alibaba.com/ Changes since v2: - Correct the furmula of Branch metrics; - Add more PE utilization metrics; - Add more TLB metrics; - Add “ScaleUnit” for some metrics; - Add a newline at the end of the file; - Link: https://lore.kernel.org/all/1668411720-3581-1-git-send-email-renyu.zj@linux.alibaba.com/ 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 ARM sbsa7.0 platform design document [0], D37-38. However, due to the wrong count of stall_slot and stall_slot_frontend on neoverse-n2, the real stall_slot and real stall_slot_frontend need to subtract cpu_cycles, so correct the expression of topdown metrics. Reference from ARM neoverse-n2 errata notice [1], D117. 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. Reference from ARM PMU guide [2][3]. [0] https://documentation-service.arm.com/static/60250c7395978b529036da86?token= [1] https://documentation-service.arm.com/static/636a66a64e6cf12278ad89cb?token= [2] https://documentation-service.arm.com/static/628f8fa3dfaf015c2b76eae8?token= [3] https://documentation-service.arm.com/static/62cfe21e31ea212bb6627393?token= $./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 -M TLB false_sharing 2 Performance counter stats for 'false_sharing 2': 31,254 L2D_TLB # 19.6 % l2_tlb_miss_rate (42.51%) 6,130 L2D_TLB_REFILL (42.51%) 1,910 L1I_TLB_REFILL # 0.1 % l1i_tlb_miss_rate (42.93%) 2,306,689 L1I_TLB (42.93%) 324,924,247 L1D_TLB # 0.0 % l1d_tlb_miss_rate (43.98%) 22,688 L1D_TLB_REFILL (43.98%) 627,992 L1I_TLB # 0.0 % itlb_walk_rate (44.26%) 92 ITLB_WALK (44.26%) 772,445,613 INST_RETIRED # 0.0 MPKI itlb_mpki (43.94%) 88 ITLB_WALK (43.94%) 907 DTLB_WALK # 0.0 % dtlb_walk_rate (43.10%) 259,132,258 L1D_TLB (43.10%) 804,080,968 INST_RETIRED # 0.0 MPKI dtlb_mpki (42.22%) 937 DTLB_WALK (42.22%) 0.479544400 seconds time elapsed 1.264233000 seconds user 0.000000000 seconds sys $sudo ./perf stat -M TopDownL1 false_sharing 2 Performance counter stats for 'false_sharing 2': 4,310,905,590 cpu_cycles # 0.0 % bad_speculation # 4.0 % retiring (66.87%) 25,009,763,735 stall_slot (66.87%) 855,659,327 op_spec (66.87%) 854,335,288 op_retired (66.87%) 4,330,308,058 cpu_cycles # 27.1 % frontend_bound (66.99%) 10,207,186,460 stall_slot_frontend (66.99%) 4,316,583,673 cpu_cycles # 69.4 % backend_bound (66.65%) 14,979,136,808 stall_slot_backend (66.65%) 0.572056818 seconds time elapsed 1.572143000 seconds user 0.004010000 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 | 286 +++++++++++++++++++++ 1 file changed, 286 insertions(+) create mode 100644 tools/perf/pmu-events/arch/arm64/arm/neoverse-n2/metrics.json -- 1.8.3.1