diff --git a/config/crd/bases/config.katalyst.kubewharf.io_adminqosconfigurations.yaml b/config/crd/bases/config.katalyst.kubewharf.io_adminqosconfigurations.yaml
index c3e4c8d..6aebc6e 100644
--- a/config/crd/bases/config.katalyst.kubewharf.io_adminqosconfigurations.yaml
+++ b/config/crd/bases/config.katalyst.kubewharf.io_adminqosconfigurations.yaml
@@ -863,6 +863,12 @@ spec:
                                   reclaimed_cores cgroup
                                 minimum: 0
                                 type: number
+                              requestBasedRatio:
+                                description: RequestBasedRatio is the rate of reserved
+                                  memory for request, 0 means disable reserved memory
+                                maximum: 1
+                                minimum: 0
+                                type: number
                               staticBasedCapacity:
                                 description: StaticBasedCapacity is the static oversold
                                   memory size by bytes
diff --git a/pkg/apis/config/v1alpha1/adminqos.go b/pkg/apis/config/v1alpha1/adminqos.go
index 129f4f2..2c68de3 100644
--- a/pkg/apis/config/v1alpha1/adminqos.go
+++ b/pkg/apis/config/v1alpha1/adminqos.go
@@ -289,6 +289,12 @@ type MemoryHeadroomUtilBasedConfig struct {
 	// +optional
 	CacheBasedRatio *float64 `json:"cacheBasedRatio,omitempty"`
 
+	// RequestBasedRatio is the rate of reserved memory for request, 0 means disable reserved memory
+	// +kubebuilder:validation:Minimum=0
+	// +kubebuilder:validation:Maximum=1
+	// +optional
+	RequestBasedRatio *float64 `json:"requestBasedRatio,omitempty"`
+
 	// MaxOversoldRate is the max oversold rate of memory headroom to the memory limit of
 	// reclaimed_cores cgroup
 	// +kubebuilder:validation:Minimum=0
diff --git a/pkg/apis/config/v1alpha1/zz_generated.deepcopy.go b/pkg/apis/config/v1alpha1/zz_generated.deepcopy.go
index ff59e41..dd187ad 100644
--- a/pkg/apis/config/v1alpha1/zz_generated.deepcopy.go
+++ b/pkg/apis/config/v1alpha1/zz_generated.deepcopy.go
@@ -1893,6 +1893,11 @@ func (in *MemoryHeadroomUtilBasedConfig) DeepCopyInto(out *MemoryHeadroomUtilBas
 		*out = new(float64)
 		**out = **in
 	}
+	if in.RequestBasedRatio != nil {
+		in, out := &in.RequestBasedRatio, &out.RequestBasedRatio
+		*out = new(float64)
+		**out = **in
+	}
 	if in.MaxOversoldRate != nil {
 		in, out := &in.MaxOversoldRate, &out.MaxOversoldRate
 		*out = new(float64)