add enable_flaky_tests and skip some flaky tests in gctuner (#5975)

pkg/cgroup/cgroup_cpu_test.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build linux
+//go:build linux && enable_flaky_tests
 
 package cgroup
 

pkg/gctuner/finalizer_test.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build enable_flaky_tests
+
 package gctuner
 
 import (

pkg/gctuner/memory_limit_tuner_test.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build enable_flaky_tests
+
 package gctuner
 
 import (

pkg/gctuner/tuner_calc_test.go

@@ -0,0 +1,39 @@
+// Copyright 2023 TiKV Project Authors.
+//
+// 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.
+
+package gctuner
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestCalcGCPercent(t *testing.T) {
+	const gb = 1024 * 1024 * 1024
+	// use default value when invalid params
+	require.Equal(t, defaultGCPercent, calcGCPercent(0, 0))
+	require.Equal(t, defaultGCPercent, calcGCPercent(0, 1))
+	require.Equal(t, defaultGCPercent, calcGCPercent(1, 0))
+
+	require.Equal(t, maxGCPercent.Load(), calcGCPercent(1, 3*gb))
+	require.Equal(t, maxGCPercent.Load(), calcGCPercent(gb/10, 4*gb))
+	require.Equal(t, maxGCPercent.Load(), calcGCPercent(gb/2, 4*gb))
+	require.Equal(t, uint32(300), calcGCPercent(1*gb, 4*gb))
+	require.Equal(t, uint32(166), calcGCPercent(1.5*gb, 4*gb))
+	require.Equal(t, uint32(100), calcGCPercent(2*gb, 4*gb))
+	require.Equal(t, uint32(100), calcGCPercent(3*gb, 4*gb))
+	require.Equal(t, minGCPercent.Load(), calcGCPercent(4*gb, 4*gb))
+	require.Equal(t, minGCPercent.Load(), calcGCPercent(5*gb, 4*gb))
+}

pkg/gctuner/tuner_test.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build enable_flaky_tests
+
 package gctuner
 
 import (
@@ -73,21 +75,3 @@ func TestTuner(t *testing.T) {
 		require.Equal(t, minGCPercent.Load(), tn.getGCPercent())
 	}
 }
-
-func TestCalcGCPercent(t *testing.T) {
-	const gb = 1024 * 1024 * 1024
-	// use default value when invalid params
-	require.Equal(t, defaultGCPercent, calcGCPercent(0, 0))
-	require.Equal(t, defaultGCPercent, calcGCPercent(0, 1))
-	require.Equal(t, defaultGCPercent, calcGCPercent(1, 0))
-
-	require.Equal(t, maxGCPercent.Load(), calcGCPercent(1, 3*gb))
-	require.Equal(t, maxGCPercent.Load(), calcGCPercent(gb/10, 4*gb))
-	require.Equal(t, maxGCPercent.Load(), calcGCPercent(gb/2, 4*gb))
-	require.Equal(t, uint32(300), calcGCPercent(1*gb, 4*gb))
-	require.Equal(t, uint32(166), calcGCPercent(1.5*gb, 4*gb))
-	require.Equal(t, uint32(100), calcGCPercent(2*gb, 4*gb))
-	require.Equal(t, uint32(100), calcGCPercent(3*gb, 4*gb))
-	require.Equal(t, minGCPercent.Load(), calcGCPercent(4*gb, 4*gb))
-	require.Equal(t, minGCPercent.Load(), calcGCPercent(5*gb, 4*gb))
-}