Extend metrics collected from Nvidia GPUs (influxdata#5885)

Author: aaronjwood

plugins/inputs/nvidia_smi/README.md

@@ -35,6 +35,15 @@ On Windows, `nvidia-smi` is generally located at `C:\Program Files\NVIDIA Corpor
     - `temperature_gpu` (integer, degrees C)
     - `utilization_gpu` (integer, percentage)
     - `utilization_memory` (integer, percentage)
+    - `pcie_link_gen_current` (integer)
+    - `pcie_link_width_current` (integer)
+    - `encoder_stats_session_count` (integer)
+    - `encoder_stats_average_fps` (integer)
+    - `encoder_stats_average_latency` (integer)
+    - `clocks_current_graphics` (integer, MHz)
+    - `clocks_current_sm` (integer, MHz)
+    - `clocks_current_memory` (integer, MHz)
+    - `clocks_current_video` (integer, MHz)
 
 ### Sample Query
 

plugins/inputs/nvidia_smi/nvidia_smi.go

@@ -16,7 +16,7 @@ import (
 
 var (
 	measurement = "nvidia_smi"
-	metrics     = "fan.speed,memory.total,memory.used,memory.free,pstate,temperature.gpu,name,uuid,compute_mode,utilization.gpu,utilization.memory,index,power.draw"
+	metrics     = "fan.speed,memory.total,memory.used,memory.free,pstate,temperature.gpu,name,uuid,compute_mode,utilization.gpu,utilization.memory,index,power.draw,pcie.link.gen.current,pcie.link.width.current,encoder.stats.sessionCount,encoder.stats.averageFps,encoder.stats.averageLatency,clocks.current.graphics,clocks.current.sm,clocks.current.memory,clocks.current.video"
 	metricNames = [][]string{
 		{"fan_speed", "integer"},
 		{"memory_total", "integer"},
@@ -31,6 +31,15 @@ var (
 		{"utilization_memory", "integer"},
 		{"index", "tag"},
 		{"power_draw", "float"},
+		{"pcie_link_gen_current", "integer"},
+		{"pcie_link_width_current", "integer"},
+		{"encoder_stats_session_count", "integer"},
+		{"encoder_stats_average_fps", "integer"},
+		{"encoder_stats_average_latency", "integer"},
+		{"clocks_current_graphics", "integer"},
+		{"clocks_current_sm", "integer"},
+		{"clocks_current_memory", "integer"},
+		{"clocks_current_video", "integer"},
 	}
 )
 

plugins/inputs/nvidia_smi/nvidia_smi_test.go

@@ -7,15 +7,15 @@ import (
 )
 
 func TestParseLineStandard(t *testing.T) {
-	line := "85, 8114, 553, 7561, P2, 61, GeForce GTX 1070 Ti, GPU-d1911b8a-f5c8-5e66-057c-486561269de8, Default, 100, 93, 1, 0.0\n"
+	line := "41, 11264, 1074, 10190, P8, 32, GeForce RTX 2080 Ti, GPU-c97b7f88-c06d-650f-5339-f8dd0c1315c0, Default, 1, 4, 0, 24.33, 1, 16, 0, 0, 0, 300, 300, 405, 540\n"
 	tags, fields, err := parseLine(line)
 	if err != nil {
 		t.Fail()
 	}
-	if tags["name"] != "GeForce GTX 1070 Ti" {
+	if tags["name"] != "GeForce RTX 2080 Ti" {
 		t.Fail()
 	}
-	if temp, ok := fields["temperature_gpu"].(int); ok && temp == 61 {
+	if temp, ok := fields["temperature_gpu"].(int); ok && temp != 32 {
 		t.Fail()
 	}
 }
@@ -37,7 +37,7 @@ func TestParseLineBad(t *testing.T) {
 }
 
 func TestParseLineNotSupported(t *testing.T) {
-	line := "[Not Supported], 7606, 0, 7606, P0, 38, Tesla P4, GPU-xxx, Default, 0, 0, 0, 0.0\n"
+	line := "[Not Supported], 11264, 1074, 10190, P8, 32, GeForce RTX 2080 Ti, GPU-c97b7f88-c06d-650f-5339-f8dd0c1315c0, Default, 1, 4, 0, 24.33, 1, 16, 0, 0, 0, 300, 300, 405, 540\n"
 	_, fields, err := parseLine(line)
 	require.NoError(t, err)
 	require.Equal(t, nil, fields["fan_speed"])