feat: support to update reservedForReclaim dynamicly

Signed-off-by: linzhecheng <linzhecheng@bytedance.com>

pkg/agent/sysadvisor/plugin/qosaware/resource/cpu/advisor_helper.go

@@ -154,6 +154,9 @@ func (cra *cpuResourceAdvisor) updateNumasAvailableResource() {
 	reservePoolInfo, _ := cra.metaCache.GetPoolInfo(state.PoolNameReserve)
 	cpusPerNuma := cra.metaServer.CPUsPerNuma()
 
+	coreNumReservedForReclaim := cra.conf.GetDynamicConfiguration().MinReclaimedResourceForAllocate[v1.ResourceCPU]
+	cra.reservedForReclaim = machine.GetCoreNumReservedForReclaim(int(coreNumReservedForReclaim.Value()), cra.metaServer.NumNUMANodes)
+
 	for id := 0; id < cra.metaServer.NumNUMANodes; id++ {
 		reservePoolNuma := 0
 		if cpuset, ok := reservePoolInfo.TopologyAwareAssignments[id]; ok {

pkg/util/machine/cpu.go

@@ -78,6 +78,12 @@ func getCPUInstructionInfo(cpuInfo string) sets.String {
 // per numa reserved resource is taken in a fair way with even step, e.g.
 // 4 -> 1 1 1 1; 2 -> 1 0 1 0
 func GetCoreNumReservedForReclaim(numReservedCores, numNumaNodes int) map[int]int {
+	if numReservedCores <= 0 {
+		numReservedCores = 1
+	}
+	if numNumaNodes < 0 {
+		numNumaNodes = 1
+	}
 	reservedPerNuma := numReservedCores / numNumaNodes
 	step := numNumaNodes / numReservedCores
 

pkg/util/machine/cpu_test.go

@@ -0,0 +1,75 @@
+/*
+Copyright 2022 The Katalyst 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 machine
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetCoreNumReservedForReclaim(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name             string
+		numReservedCores int
+		numNumaNodes     int
+		want             map[int]int
+	}{
+		{
+			name:             "reserve 4",
+			numReservedCores: 4,
+			numNumaNodes:     4,
+			want:             map[int]int{0: 1, 1: 1, 2: 1, 3: 1},
+		},
+		{
+			name:             "reserve 2",
+			numReservedCores: 2,
+			numNumaNodes:     4,
+			want:             map[int]int{0: 1, 1: 0, 2: 1, 3: 0},
+		},
+		{
+			name:             "reserve 3",
+			numReservedCores: 3,
+			numNumaNodes:     4,
+			want:             map[int]int{0: 1, 1: 1, 2: 1, 3: 1},
+		},
+		{
+			name:             "reserve 0",
+			numReservedCores: 0,
+			numNumaNodes:     4,
+			want:             map[int]int{0: 1, 1: 0, 2: 0, 3: 0},
+		},
+		{
+			name:             "reserve 1",
+			numReservedCores: 1,
+			numNumaNodes:     4,
+			want:             map[int]int{0: 1, 1: 0, 2: 0, 3: 0},
+		},
+	}
+
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			r := GetCoreNumReservedForReclaim(tt.numReservedCores, tt.numNumaNodes)
+			assert.Equal(t, tt.want, r)
+		})
+	}
+}