Messages in this thread Patch in this message | | | Date | Wed, 13 Mar 2024 22:58:34 -0700 | Subject | [PATCH v3 07/12] perf jevents: Add itlb metric group for AMD | From | Ian Rogers <> |
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Add metrics that give an overview and details of the l1 itlb (zen1, zen2, zen3) and l2 itlb (all zens).
Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/pmu-events/amd_metrics.py | 48 ++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+)
diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py index 5c91e97ae6c4..519aa9ab8801 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -120,6 +120,53 @@ def AmdBr(): description="breakdown of retired branch instructions") +def AmdItlb(): + global _zen_model + l2h = Event("bp_l1_tlb_miss_l2_tlb_hit", "bp_l1_tlb_miss_l2_hit") + l2m = Event("l2_itlb_misses") + l2r = l2h + l2m + + itlb_l1_mg = None + l1m = l2r + if _zen_model <= 3: + l1r = Event("ic_fw32") + l1h = max(l1r - l1m, 0) + itlb_l1_mg = MetricGroup("itlb_l1", [ + Metric("itlb_l1_hits", + "L1 ITLB hits as a perecentage of L1 ITLB accesses.", + d_ratio(l1h, l1h + l1m), "100%"), + Metric("itlb_l1_miss", + "L1 ITLB misses as a perecentage of L1 ITLB accesses.", + d_ratio(l1m, l1h + l1m), "100%"), + Metric("itlb_l1_reqs", + "The number of 32B fetch windows transferred from IC pipe to DE " + "instruction decoder per second.", d_ratio(l1r, interval_sec), + "windows/sec"), + ]) + + return MetricGroup("itlb", [ + MetricGroup("itlb_ov", [ + Metric("itlb_ov_insn_bt_l1_miss", + "Number of instructions between l1 misses", d_ratio( + ins, l1m), "insns"), + Metric("itlb_ov_insn_bt_l2_miss", + "Number of instructions between l2 misses", d_ratio( + ins, l2m), "insns"), + ]), + itlb_l1_mg, + MetricGroup("itlb_l2", [ + Metric("itlb_l2_hits", + "L2 ITLB hits as a percentage of all L2 ITLB accesses.", + d_ratio(l2h, l2r), "100%"), + Metric("itlb_l2_miss", + "L2 ITLB misses as a percentage of all L2 ITLB accesses.", + d_ratio(l2m, l2r), "100%"), + Metric("itlb_l2_reqs", "ITLB accesses per second.", + d_ratio(l2r, interval_sec), "accesses/sec"), + ]), + ], description="Instruction TLB breakdown") + + def AmdHwpf(): """Returns a MetricGroup representing AMD hardware prefetch metrics.""" global _zen_model @@ -339,6 +386,7 @@ def main() -> None: all_metrics = MetricGroup("", [ AmdBr(), + AmdItlb(), AmdHwpf(), AmdSwpf(), AmdUpc(), -- 2.44.0.278.ge034bb2e1d-goog
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