perfmon: new perfmon plugin

Type: feature
Change-Id: I2c14f82393d11fc05c6d229f5c58603ab5c0f14d
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/src/plugins/perfmon/intel/bundle/mem_bw.c b/src/plugins/perfmon/intel/bundle/mem_bw.c
new file mode 100644
index 00000000000..672dbb0677d
--- /dev/null
+++ b/src/plugins/perfmon/intel/bundle/mem_bw.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2020 Cisco 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 <vnet/vnet.h>
+#include <vppinfra/linux/sysfs.h>
+#include <perfmon/perfmon.h>
+#include <perfmon/intel/uncore.h>
+
+static u8 *
+format_intel_uncore_imc_bw (u8 *s, va_list *args)
+{
+  perfmon_reading_t *r = va_arg (*args, perfmon_reading_t *);
+  int col = va_arg (*args, int);
+  f64 tr = r->time_running * 1e-9;
+
+  switch (col)
+    {
+    case 0:
+      s = format (s, "%9.2f", tr);
+      break;
+    case 1:
+      if (r->time_running)
+	s = format (s, "%9.2f", (f64) r->value[0] * 64 * 1e-6 / tr);
+      break;
+    case 2:
+      if (r->time_running)
+	s = format (s, "%9.2f", (f64) r->value[1] * 64 * 1e-6 / tr);
+      break;
+    case 3:
+      if (r->time_running)
+	s = format (s, "%9.2f",
+		    (f64) (r->value[0] + r->value[1]) * 64 * 1e-6 / tr);
+      break;
+    default:
+      break;
+    }
+
+  return s;
+}
+
+PERFMON_REGISTER_BUNDLE (intel_uncore_imc_bw) = {
+  .name = "memory-bandwidth",
+  .description = "memory reads and writes per memory controller channel",
+  .source = "intel-uncore",
+  .type = PERFMON_BUNDLE_TYPE_SYSTEM,
+  .events[0] = INTEL_UNCORE_E_IMC_UNC_M_CAS_COUNT_RD,
+  .events[1] = INTEL_UNCORE_E_IMC_UNC_M_CAS_COUNT_WR,
+  .n_events = 2,
+  .format_fn = format_intel_uncore_imc_bw,
+  .column_headers = PERFMON_STRINGS ("RunTime", "Reads (MB/s)",
+				     "Writes (MB/s)", "Total (MB/s)"),
+};