Merge pull request #36 from zzzzhhb/system_load_conf

enhancement(eviction): system load eviction configuration

config/crd/bases/config.katalyst.kubewharf.io_adminqosconfigurations.yaml

@@ -217,6 +217,52 @@ spec:
                             format: int64
                             type: integer
                         type: object
+                      systemLoadPressureEvictionConfig:
+                        description: SystemLoadPressureEvictionConfig is the config
+                          for system load eviction
+                        properties:
+                          coolDownTime:
+                            description: CoolDownTime is the cool-down time of the
+                              plugin evict pods
+                            format: int64
+                            minimum: 1
+                            type: integer
+                          gracePeriod:
+                            description: GracePeriod is the grace period of pod deletion
+                            format: int64
+                            type: integer
+                          hardThreshold:
+                            description: HardThreshold is the hard threshold of system
+                              load pressure, it should be an integral multiple of
+                              100, which means the real threshold is (SoftThreshold
+                              / 100) * CoreNumber
+                            format: int64
+                            type: integer
+                          historySize:
+                            description: HistorySize is the size of the load metric
+                              ring, which is used to calculate the system load
+                            format: int64
+                            minimum: 1
+                            type: integer
+                          softThreshold:
+                            description: SoftThreshold is the soft threshold of system
+                              load pressure, it should be an integral multiple of
+                              100, which means the real threshold is (SoftThreshold
+                              / 100) * CoreNumber
+                            format: int64
+                            type: integer
+                          syncPeriod:
+                            description: SyncPeriod is the interval in seconds of
+                              the plugin fetch the load information
+                            format: int64
+                            minimum: 1
+                            type: integer
+                          thresholdMetPercentage:
+                            description: the plugin considers the node is facing load
+                              pressure only when the ratio of load history which is
+                              greater than threshold is greater than this percentage
+                            type: number
+                        type: object
                     type: object
                   reclaimedResourceConfig:
                     description: ReclaimedResourceConfig is a configuration for reclaim

pkg/apis/config/v1alpha1/adminqos.go

@@ -189,6 +189,10 @@ type EvictionConfig struct {
 	// +optional
 	CPUPressureEvictionConfig *CPUPressureEvictionConfig `json:"cpuPressureEvictionConfig,omitempty"`
 
+	// SystemLoadPressureEvictionConfig is the config for system load eviction
+	// +optional
+	SystemLoadPressureEvictionConfig *SystemLoadPressureEvictionConfig `json:"systemLoadPressureEvictionConfig,omitempty"`
+
 	// MemoryPressureEvictionConfig is the config for memory pressure eviction
 	// +optional
 	MemoryPressureEvictionConfig *MemoryPressureEvictionConfig `json:"memoryPressureEvictionConfig,omitempty"`
@@ -320,6 +324,42 @@ type MemoryPressureEvictionConfig struct {
 	GracePeriod *int64 `json:"gracePeriod,omitempty"`
 }
 
+type SystemLoadPressureEvictionConfig struct {
+	// SoftThreshold is the soft threshold of system load pressure, it should be an integral multiple of 100, which means
+	// the real threshold is (SoftThreshold / 100) * CoreNumber
+	// +optional
+	SoftThreshold *int64 `json:"softThreshold,omitempty"`
+
+	// HardThreshold is the hard threshold of system load pressure, it should be an integral multiple of 100, which means
+	// the real threshold is (SoftThreshold / 100) * CoreNumber
+	// +optional
+	HardThreshold *int64 `json:"hardThreshold,omitempty"`
+
+	// HistorySize is the size of the load metric ring, which is used to calculate the system load
+	// +kubebuilder:validation:Minimum=1
+	// +optional
+	HistorySize *int64 `json:"historySize,omitempty"`
+
+	// SyncPeriod is the interval in seconds of the plugin fetch the load information
+	// +kubebuilder:validation:Minimum=1
+	// +optional
+	SyncPeriod *int64 `json:"syncPeriod,omitempty"`
+
+	// CoolDownTime is the cool-down time of the plugin evict pods
+	// +kubebuilder:validation:Minimum=1
+	// +optional
+	CoolDownTime *int64 `json:"coolDownTime,omitempty"`
+
+	// GracePeriod is the grace period of pod deletion
+	// +optional
+	GracePeriod *int64 `json:"gracePeriod,omitempty"`
+
+	// the plugin considers the node is facing load pressure only when the ratio of load history which is greater than
+	// threshold is greater than this percentage
+	// +optional
+	ThresholdMetPercentage *float64 `json:"thresholdMetPercentage,omitempty"`
+}
+
 // NumaEvictionRankingMetric is the metrics used to rank pods for eviction at the
 // NUMA level
 // +kubebuilder:validation:Enum=qos.pod;priority.pod;mem.total.numa.container