perfmon: show distribution of uops delivered to frontend

[vpp.git] / src / plugins / perfmon / intel / bundle / frontend_bound_bw_uops.c

diff --git a/src/plugins/perfmon/intel/bundle/frontend_bound_bw_uops.c b/src/plugins/perfmon/intel/bundle/frontend_bound_bw_uops.c
new file mode 100644 (file)
index 0000000..6bf08af
--- /dev/null
+++ b/src/plugins/perfmon/intel/bundle/frontend_bound_bw_uops.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2022 Intel and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <perfmon/perfmon.h>
+#include <perfmon/intel/core.h>
+
+enum
+{
+  THREAD_P,
+  THREE_UOP,
+  TWO_UOP,
+  ONE_UOP,
+  NO_UOP,
+  FOUR_UOP,
+};
+
+static u8 *
+format_intel_frontend_bound_bw_uops (u8 *s, va_list *args)
+{
+  perfmon_node_stats_t *ss = va_arg (*args, perfmon_node_stats_t *);
+  int row = va_arg (*args, int);
+  f64 sv = 0;
+  f64 cycles = ss->value[THREAD_P];
+
+  switch (row)
+    {
+    case 0:
+      sv = (ss->value[FOUR_UOP] / cycles) * 100;
+      break;
+    case 1:
+      sv = ((ss->value[THREE_UOP] - ss->value[TWO_UOP]) / cycles) * 100;
+      break;
+    case 2:
+      sv = ((ss->value[TWO_UOP] - ss->value[ONE_UOP]) / cycles) * 100;
+      break;
+    case 3:
+      sv = ((ss->value[ONE_UOP] - ss->value[NO_UOP]) / cycles) * 100;
+      break;
+    case 4:
+      sv = (ss->value[NO_UOP] / cycles) * 100;
+      break;
+    }
+
+  s = format (s, "%04.1f", sv);
+
+  return s;
+}
+
+static perfmon_cpu_supports_t frontend_bound_bw_cpu_supports_uops[] = {
+  { clib_cpu_supports_avx512_bitalg, PERFMON_BUNDLE_TYPE_NODE },
+};
+
+PERFMON_REGISTER_BUNDLE (intel_core_frontend_bound_bw_uops) = {
+  .name = "td-frontend-bw-uops",
+  .description = "Topdown FrontEnd-bound BandWidth - distribution of "
+                "uops delivered to frontend",
+  .source = "intel-core",
+  .events[0] = INTEL_CORE_E_CPU_CLK_UNHALTED_THREAD_P, /* 0x0F */
+  .events[1] =
+    INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_3_UOP_DELIV_CORE, /* 0xFF */
+  .events[2] =
+    INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_2_UOP_DELIV_CORE, /* 0xFF */
+  .events[3] =
+    INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_1_UOP_DELIV_CORE, /* 0xFF */
+  .events[4] =
+    INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_0_UOP_DELIV_CORE,     /* 0xFF */
+  .events[5] = INTEL_CORE_E_IDQ_UOPS_NOT_DELIVERED_CYCLES_FE_WAS_OK, /* 0xFF */
+  .n_events = 6,
+  .format_fn = format_intel_frontend_bound_bw_uops,
+  .cpu_supports = frontend_bound_bw_cpu_supports_uops,
+  .n_cpu_supports = ARRAY_LEN (frontend_bound_bw_cpu_supports_uops),
+  .column_headers = PERFMON_STRINGS ("% 4 UOPS", "% 3 UOPS", "% 2 UOPS",
+                                    "% 1 UOPS", "% 0 UOPS"),
+  .footer =
+    "For more information, see the Intel(R) 64 and IA-32 Architectures\n"
+    "Optimization Reference Manual section on the Front End.",
+};