Messages in this thread Patch in this message | | | Date | Wed, 13 Mar 2024 22:58:33 -0700 | Subject | [PATCH v3 06/12] perf jevents: Add hardware prefetch (hwpf) metric group for AMD | From | Ian Rogers <> |
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Add metrics that give the utility of hardware prefetches on zen2, zen3 and zen4.
Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/pmu-events/amd_metrics.py | 62 ++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+)
diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py index 9551b44dbbaf..5c91e97ae6c4 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -120,6 +120,67 @@ def AmdBr(): description="breakdown of retired branch instructions") +def AmdHwpf(): + """Returns a MetricGroup representing AMD hardware prefetch metrics.""" + global _zen_model + if _zen_model <= 1: + return None + + hwp_ld = Event("ls_dispatch.ld_dispatch") + hwp_l2 = Event("ls_hw_pf_dc_fills.local_l2", + "ls_hw_pf_dc_fills.lcl_l2", + "ls_hw_pf_dc_fill.ls_mabresp_lcl_l2") + hwp_lc = Event("ls_hw_pf_dc_fills.local_ccx", + "ls_hw_pf_dc_fills.int_cache", + "ls_hw_pf_dc_fill.ls_mabresp_lcl_cache") + hwp_lm = Event("ls_hw_pf_dc_fills.dram_io_near", + "ls_hw_pf_dc_fills.mem_io_local", + "ls_hw_pf_dc_fill.ls_mabresp_lcl_dram") + hwp_rc = Event("ls_hw_pf_dc_fills.far_cache", + "ls_hw_pf_dc_fills.ext_cache_remote", + "ls_hw_pf_dc_fill.ls_mabresp_rmt_cache") + hwp_rm = Event("ls_hw_pf_dc_fills.dram_io_far", + "ls_hw_pf_dc_fills.mem_io_remote", + "ls_hw_pf_dc_fill.ls_mabresp_rmt_dram") + + loc_pf = hwp_l2 + hwp_lc + hwp_lm + rem_pf = hwp_rc + hwp_rm + all_pf = loc_pf + rem_pf + + r1 = d_ratio(ins, all_pf) + r2 = d_ratio(hwp_ld, all_pf) + r3 = d_ratio(all_pf, interval_sec) + + overview = MetricGroup("hwpf_overview", [ + Metric("hwpf_ov_insn_bt_hwpf", "Insn between HWPF", r1, "insns"), + Metric("hwpf_ov_loads_bt_hwpf", "Loads between HWPF", r2, "loads"), + Metric("hwpf_ov_rate", "HWPF per second", r3, "hwpf/s"), + ]) + r1 = d_ratio(hwp_l2, all_pf) + r2 = d_ratio(hwp_lc, all_pf) + r3 = d_ratio(hwp_lm, all_pf) + data_src_local = MetricGroup("hwpf_data_src_local", [ + Metric("hwpf_data_src_local_l2", "Data source local l2", r1, "100%"), + Metric("hwpf_data_src_local_ccx_l3_loc_ccx", + "Data source local ccx l3 loc ccx", r2, "100%"), + Metric("hwpf_data_src_local_memory_or_io", + "Data source local memory or IO", r3, "100%"), + ]) + + r1 = d_ratio(hwp_rc, all_pf) + r2 = d_ratio(hwp_rm, all_pf) + data_src_remote = MetricGroup("hwpf_data_src_remote", [ + Metric("hwpf_data_src_remote_cache", "Data source remote cache", r1, + "100%"), + Metric("hwpf_data_src_remote_memory_or_io", + "Data source remote memory or IO", r2, "100%"), + ]) + + data_src = MetricGroup("hwpf_data_src", [data_src_local, data_src_remote]) + return MetricGroup("hwpf", [overview, data_src], + description="Hardware prefetch breakdown (CCX L3 = L3 of current thread, Loc CCX = CCX cache on some socket)") + + def AmdSwpf() -> Optional[MetricGroup]: """Returns a MetricGroup representing AMD software prefetch metrics.""" global _zen_model @@ -278,6 +339,7 @@ def main() -> None: all_metrics = MetricGroup("", [ AmdBr(), + AmdHwpf(), AmdSwpf(), AmdUpc(), Idle(), -- 2.44.0.278.ge034bb2e1d-goog
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