From nobody Mon Feb 9 13:01:13 2026 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E6D643B194 for ; Fri, 1 Mar 2024 18:47:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709318880; cv=none; b=TCmk6zjdxR4oxuJlf02Pk47LT3t+Am11tEBU/rDmtPH2SdLWwGOHF4WAA86aJvqieURqnP7A+V7MmDDUMTSrYN1MAnRpE/UKeomQSlUMklUUfya26Q64S/P6AmyrNlaoHl8QesBDR4QJy1BeaS2iX93DXhEZ6Yu5KapNTR0v6ew= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709318880; c=relaxed/simple; bh=+avI6OXSebapAM2pF6TaSl95UtS1MYUkS9EvCqrF/LU=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=t6OLIM/MgRevY7k+gI4qQ7MwyNnjAvaVxQ9ntAX+OfX2SC4+3dyPy45ut484XDPrzGw5KV1wqk7L8eyxdDv8Buk7QvXdH2yHix2/ES7czuOluF7YgBW4aT5ItF1HBqdsNJERRgSoHu90tED+e57w4ZS3hfZDbe1XlTwVhzPVLRs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=awb4jSZ3; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="awb4jSZ3" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dc6b269686aso3600397276.1 for ; Fri, 01 Mar 2024 10:47:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709318878; x=1709923678; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=gcc/qUxyeEjzpXo98Okf44ySOQGx/p2IAM001Az25yY=; b=awb4jSZ3qKGejA5dbO4I1dDLUhX2A4dEiNDwODlpM2rsclpB9N1Wpnrv5uNhGfjmrL C+MhNWFWMF5Ch6eQNVjLfBouAUUNisEgzmwmV8bniLCz6c4I3WD+vTC8KsSdMK8qBN8n blESTGOeek7w9oCKIw2RRNbrJQUy5Oxr4Z8kE0d0eVX+HLXfAJs3U4T7p4A/a84y2cho 9wyvqV0hoTU4A19+WjGl5RJJEr/TF5dZi06UUyYqM8nswmGAYOHbSu8XCiovpGtp5gxR dkgendH7iG1ufBofpsT0ChkSksRS0AFUVKaSKJYK1ETe9cH0wQfZC3HeAjxWsL1ZFCTe hdEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709318878; x=1709923678; h=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=gcc/qUxyeEjzpXo98Okf44ySOQGx/p2IAM001Az25yY=; b=IR5n5lIttG4oYBP+zARRTs3ykWsrtiKf34R6Qj95ZmBov2aaJUNXBUZYw/fQfH/HOX BwtPm5N3A2/gebYzrbnseSYYluuDREn+ZIi//ri/1/FuvzCUMsh2EogClZAj5mqmzKxP /bCe/hP0kSewXI+1y0TWlNrmPoez03mKvRXzRiIatsYmTJ4dgjDj2wTGol7G/8GxWAaT dLVvzFGLMaJFL1HbmN8I85TWCoA4a/xza//k++Fzp4h6/cetpItOMx2FHojM77rfntou 5sjITi93WPwUE+Pugy21fkxSjrO1zQW+J2x9A43jOh2vSW9t0ProYWhhlGc6iFppkEvz VYzA== X-Forwarded-Encrypted: i=1; AJvYcCVf6VZGpVs5/4ScQzgBSknsq/S4iYCRZHZCpl/81dRkmKQxXW+c6K9UpQ1Kwu1HhTi+X+vBsd2j+AUYXZ6OWmA/Pm+/gE+BYFlgkbSn X-Gm-Message-State: AOJu0YwlRLAfo52GRHsRrXqoSR3rjdtK5e2CDAcB99VYNlrys35HZDnX 0MGlHFgpeIweLJ2hn6O55RxkeYCrfQZjUmhNzpIiedk/ZWUn3NC3JA1UuDhO2HL87VCDM7EKB9V dEdvVfw== X-Google-Smtp-Source: AGHT+IE6DAkO4+RnVsXtpYKXgmaTECxjtmB3IX/p1VUna1oQEg1kmhUMcj19BksK+jU5OOqpTbzVIlbZgo1m X-Received: from irogers.svl.corp.google.com ([2620:15c:2a3:200:af4b:7fc1:b7be:fcb7]) (user=irogers job=sendgmr) by 2002:a05:6902:188f:b0:dc6:b768:2994 with SMTP id cj15-20020a056902188f00b00dc6b7682994mr108005ybb.0.1709318878023; Fri, 01 Mar 2024 10:47:58 -0800 (PST) Date: Fri, 1 Mar 2024 10:47:30 -0800 In-Reply-To: <20240301184737.2660108-1-irogers@google.com> Message-Id: <20240301184737.2660108-6-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240301184737.2660108-1-irogers@google.com> X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Subject: [PATCH v2 05/12] perf jevents: Add software prefetch (swpf) metric group for AMD From: Ian Rogers To: Sandipan Das , Ravi Bangoria , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , John Garry , Kan Liang , Jing Zhang , Thomas Richter , James Clark , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Stephane Eranian Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add metrics that give the utility of software prefetches on zen2, zen3 and zen4. Signed-off-by: Ian Rogers --- tools/perf/pmu-events/amd_metrics.py | 95 ++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/a= md_metrics.py index f8d5ba2861ee..52451bcb4bbf 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -125,6 +125,100 @@ def AmdBr(): description=3D"breakdown of retired branch instructio= ns") =20 =20 +def AmdSwpf() -> Optional[MetricGroup]: + """Returns a MetricGroup representing AMD software prefetch metrics.""" + if zen_model <=3D 1: + return None + + swp_ld =3D Event("ls_dispatch.ld_dispatch") + swp_t0 =3D Event("ls_pref_instr_disp.prefetch") + swp_w =3D Event("ls_pref_instr_disp.prefetch_w") # Missing on Zen1 + swp_nt =3D Event("ls_pref_instr_disp.prefetch_nta") + swp_mab =3D Event("ls_inef_sw_pref.mab_mch_cnt") + swp_l2 =3D Event("ls_sw_pf_dc_fills.local_l2", + "ls_sw_pf_dc_fills.lcl_l2", + "ls_sw_pf_dc_fill.ls_mabresp_lcl_l2") + swp_lc =3D Event("ls_sw_pf_dc_fills.local_ccx", + "ls_sw_pf_dc_fills.int_cache", + "ls_sw_pf_dc_fill.ls_mabresp_lcl_cache") + swp_lm =3D Event("ls_sw_pf_dc_fills.dram_io_near", + "ls_sw_pf_dc_fills.mem_io_local", + "ls_sw_pf_dc_fill.ls_mabresp_lcl_dram") + swp_rc =3D Event("ls_sw_pf_dc_fills.far_cache", + "ls_sw_pf_dc_fills.ext_cache_remote", + "ls_sw_pf_dc_fill.ls_mabresp_rmt_cache") + swp_rm =3D Event("ls_sw_pf_dc_fills.dram_io_far", + "ls_sw_pf_dc_fills.mem_io_remote", + "ls_sw_pf_dc_fill.ls_mabresp_rmt_dram") + + # All the swpf that were satisfied beyond L1D are good. + all_pf =3D swp_t0 + swp_w + swp_nt + good_pf =3D swp_l2 + swp_lc + swp_lm + swp_rc + swp_rm + bad_pf =3D max(all_pf - good_pf, 0) + + loc_pf =3D swp_l2 + swp_lc + swp_lm + rem_pf =3D swp_rc + swp_rm + + req_pend =3D max(0, bad_pf - swp_mab) + + r1 =3D d_ratio(ins, all_pf) + r2 =3D d_ratio(swp_ld, all_pf) + r3 =3D d_ratio(swp_t0, interval_sec) + r4 =3D d_ratio(swp_w, interval_sec) + r5 =3D d_ratio(swp_nt, interval_sec) + overview =3D MetricGroup("swpf_overview", [ + Metric("swpf_ov_insn_bt_swpf", "Insn between SWPF", r1, "insns"), + Metric("swpf_ov_loads_bt_swpf", "Loads between SWPF", r2, "loads"), + Metric("swpf_ov_rate_prefetch_t0_t1_t2", "Rate prefetch TO_T1_T2", r= 3, + "insns/sec"), + Metric("swpf_ov_rate_prefetch_w", "Rate prefetch W", r4, "insns/sec"= ), + Metric("swpf_ov_rate_preftech_nta", "Rate prefetch NTA", r5, "insns/= sec"), + ]) + + r1 =3D d_ratio(swp_mab, all_pf) + r2 =3D d_ratio(req_pend, all_pf) + usefulness_bad =3D MetricGroup("swpf_usefulness_bad", [ + Metric("swpf_use_bad_hit_l1", "Usefulness bad hit L1", r1, "100%"), + Metric("swpf_use_bad_req_pend", "Usefulness bad req pending", r2, "1= 00%"), + ]) + + r1 =3D d_ratio(good_pf, all_pf) + usefulness_good =3D MetricGroup("swpf_usefulness_good", [ + Metric("swpf_use_good_other_src", "Usefulness good other src", r1, + "100%"), + ]) + + usefulness =3D MetricGroup("swpf_usefulness", [ + usefulness_bad, + usefulness_good, + ]) + + r1 =3D d_ratio(swp_l2, good_pf) + r2 =3D d_ratio(swp_lc, good_pf) + r3 =3D d_ratio(swp_lm, good_pf) + data_src_local =3D MetricGroup("swpf_data_src_local", [ + Metric("swpf_data_src_local_l2", "Data source local l2", r1, "100%"), + Metric("swpf_data_src_local_ccx_l3_loc_ccx", + "Data source local ccx l3 loc ccx", r2, "100%"), + Metric("swpf_data_src_local_memory_or_io", + "Data source local memory or IO", r3, "100%"), + ]) + + r1 =3D d_ratio(swp_rc, good_pf) + r2 =3D d_ratio(swp_rm, good_pf) + data_src_remote =3D MetricGroup("swpf_data_src_remote", [ + Metric("swpf_data_src_remote_cache", "Data source remote cache", r1, + "100%"), + Metric("swpf_data_src_remote_memory_or_io", + "Data source remote memory or IO", r2, "100%"), + ]) + + data_src =3D MetricGroup("swpf_data_src", [data_src_local, data_src_remo= te]) + + return MetricGroup("swpf", [overview, usefulness, data_src], + description=3D"Sofware prefetch breakdown (CCX L3 =3D= L3 of current thread, Loc CCX =3D CCX cache on some socket)") + + def AmdUpc() -> Metric: ops =3D Event("ex_ret_ops", "ex_ret_cops") upc =3D d_ratio(ops, smt_cycles) @@ -162,6 +256,7 @@ def Rapl() -> MetricGroup: =20 all_metrics =3D MetricGroup("", [ AmdBr(), + AmdSwpf(), AmdUpc(), Idle(), Rapl(), --=20 2.44.0.278.ge034bb2e1d-goog