diff --git a/pkg/mcs/resourcemanager/server/config.go b/pkg/mcs/resourcemanager/server/config.go
index bcd5a853dfc..508f37fe069 100644
--- a/pkg/mcs/resourcemanager/server/config.go
+++ b/pkg/mcs/resourcemanager/server/config.go
@@ -123,7 +123,6 @@ func (rmc *ControllerConfig) Adjust(meta *configutil.ConfigMetaData) {
 
 // RequestUnitConfig is the configuration of the request units, which determines the coefficients of
 // the RRU and WRU cost. This configuration should be modified carefully.
-// TODO: use common config with client size.
 type RequestUnitConfig struct {
 	// ReadBaseCost is the base cost for a read request. No matter how many bytes read/written or
 	// the CPU times taken for a request, this cost is inevitable.