diff mbox series

[v1,09/13] perf jevents: Add uncore l3 metric group for AMD

Message ID 20240229001537.4158049-10-irogers@google.com
State New
Headers
Series Python generated AMD Zen metrics |

Commit Message

Ian Rogers Feb. 29, 2024, 12:15 a.m. UTC 
  Metrics use the amd_l3 PMU for access/miss/hit information.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/pmu-events/amd_metrics.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
diff mbox series

Patch

diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py
index be10acb40762..f4a4ece551ef 100755
--- a/tools/perf/pmu-events/amd_metrics.py
+++ b/tools/perf/pmu-events/amd_metrics.py
@@ -467,6 +467,23 @@  def Rapl() -> MetricGroup:
   return MetricGroup("cpu_power", metrics,
                      description="Processor socket power consumption estimates")
 
+def UncoreL3():
+  acc = Event("l3_lookup_state.all_coherent_accesses_to_l3",
+              "l3_lookup_state.all_l3_req_typs")
+  miss = Event("l3_lookup_state.l3_miss",
+               "l3_comb_clstr_state.request_miss")
+  acc = max(acc, miss)
+  hits = acc - miss
+
+  return MetricGroup("l3", [
+      Metric("l3_accesses", "L3 victim cache accesses",
+             d_ratio(acc, interval_sec), "accesses/sec"),
+      Metric("l3_hits", "L3 victim cache hit rate", d_ratio(hits, acc), "100%"),
+      Metric("l3_miss", "L3 victim cache miss rate", d_ratio(miss, acc),
+             "100%"),
+  ], description="L3 cache breakdown per CCX")
+
+
 all_metrics = MetricGroup("", [
     AmdBr(),
     AmdDtlb(),
@@ -476,6 +493,7 @@  all_metrics = MetricGroup("", [
     AmdUpc(),
     Idle(),
     Rapl(),
+    UncoreL3(),
 ])
 
 if args.metricgroups: