diff --git a/conf/config.toml b/conf/config.toml
index 3b3289eb61c..ae2b4122cf4 100644
--- a/conf/config.toml
+++ b/conf/config.toml
@@ -67,6 +67,7 @@ leader-schedule-limit = 4
 region-schedule-limit = 64
 replica-schedule-limit = 64
 merge-schedule-limit = 8
+hot-region-schedule-limit = 4
 #tolerant-size-ratio = 0.0
 #enable-one-way-merge = false
 
diff --git a/pkg/mock/mockoption/mockoption.go b/pkg/mock/mockoption/mockoption.go
index cd55f712ade..df2baf560dd 100644
--- a/pkg/mock/mockoption/mockoption.go
+++ b/pkg/mock/mockoption/mockoption.go
@@ -28,10 +28,10 @@ const (
 	defaultSplitMergeInterval          = 0
 	defaultMaxStoreDownTime            = 30 * time.Minute
 	defaultLeaderScheduleLimit         = 4
-	defaultRegionScheduleLimit         = 4
-	defaultReplicaScheduleLimit        = 8
+	defaultRegionScheduleLimit         = 64
+	defaultReplicaScheduleLimit        = 64
 	defaultMergeScheduleLimit          = 8
-	defaultHotRegionScheduleLimit      = 2
+	defaultHotRegionScheduleLimit      = 4
 	defaultStoreBalanceRate            = 60
 	defaultTolerantSizeRatio           = 2.5
 	defaultLowSpaceRatio               = 0.8
diff --git a/server/config.go b/server/config.go
index 3eb800042e8..5e53c43f7b3 100644
--- a/server/config.go
+++ b/server/config.go
@@ -576,11 +576,11 @@ const (
 	defaultSplitMergeInterval     = 1 * time.Hour
 	defaultPatrolRegionInterval   = 100 * time.Millisecond
 	defaultMaxStoreDownTime       = 30 * time.Minute
-	defaultLeaderScheduleLimit    = 8
+	defaultLeaderScheduleLimit    = 4
 	defaultRegionScheduleLimit    = 64
 	defaultReplicaScheduleLimit   = 64
 	defaultMergeScheduleLimit     = 8
-	defaultHotRegionScheduleLimit = 2
+	defaultHotRegionScheduleLimit = 4
 	defaultStoreBalanceRate       = 15
 	defaultTolerantSizeRatio      = 0
 	defaultLowSpaceRatio          = 0.8