fix(qrm): align the core num reserved for reclaim to numa total count

pkg/util/machine/cpu.go

@@ -76,14 +76,16 @@ func getCPUInstructionInfo(cpuInfo string) sets.String {
 
 // GetCoreNumReservedForReclaim generates per numa reserved for reclaim resource value map.
 // 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
+// 4 -> 1 1 1 1; 2 -> 1 1 1 1; 8 -> 2 2 2 2;
 func GetCoreNumReservedForReclaim(numReservedCores, numNumaNodes int) map[int]int {
-	if numReservedCores <= 0 {
-		numReservedCores = 1
-	}
 	if numNumaNodes <= 0 {
 		numNumaNodes = 1
 	}
+
+	if numReservedCores < numNumaNodes {
+		numReservedCores = numNumaNodes
+	}
+
 	reservedPerNuma := numReservedCores / numNumaNodes
 	step := numNumaNodes / numReservedCores
 

pkg/util/machine/cpu_test.go

@@ -41,7 +41,7 @@ func TestGetCoreNumReservedForReclaim(t *testing.T) {
 			name:             "reserve 2",
 			numReservedCores: 2,
 			numNumaNodes:     4,
-			want:             map[int]int{0: 1, 1: 0, 2: 1, 3: 0},
+			want:             map[int]int{0: 1, 1: 1, 2: 1, 3: 1},
 		},
 		{
 			name:             "reserve 3",
@@ -53,13 +53,19 @@ func TestGetCoreNumReservedForReclaim(t *testing.T) {
 			name:             "reserve 0",
 			numReservedCores: 0,
 			numNumaNodes:     4,
-			want:             map[int]int{0: 1, 1: 0, 2: 0, 3: 0},
+			want:             map[int]int{0: 1, 1: 1, 2: 1, 3: 1},
 		},
 		{
 			name:             "reserve 1",
 			numReservedCores: 1,
 			numNumaNodes:     4,
-			want:             map[int]int{0: 1, 1: 0, 2: 0, 3: 0},
+			want:             map[int]int{0: 1, 1: 1, 2: 1, 3: 1},
+		},
+		{
+			name:             "reserve 8",
+			numReservedCores: 8,
+			numNumaNodes:     4,
+			want:             map[int]int{0: 2, 1: 2, 2: 2, 3: 2},
 		},
 	}