diff --git a/configs/deformable_detr/_base_/deformable_detr_reader.yml b/configs/deformable_detr/_base_/deformable_detr_reader.yml
index 5a7199296ae2f148c718e222002674093a29511f..3822df4235ef57862e10c31309aab922e5302646 100644
--- a/configs/deformable_detr/_base_/deformable_detr_reader.yml
+++ b/configs/deformable_detr/_base_/deformable_detr_reader.yml
@@ -1,4 +1,4 @@
-worker_num: 0
+worker_num: 2
 TrainReader:
   sample_transforms:
   - Decode: {}
diff --git a/configs/mot/jde/_base_/jde_reader_1088x608.yml b/configs/mot/jde/_base_/jde_reader_1088x608.yml
index 922f08b986c0a14a7c69963e27a4e93ad6422d20..e34e2a366217758d8d4bedaefacff027e7ef857c 100644
--- a/configs/mot/jde/_base_/jde_reader_1088x608.yml
+++ b/configs/mot/jde/_base_/jde_reader_1088x608.yml
@@ -1,4 +1,4 @@
-worker_num: 2
+worker_num: 8
 TrainReader:
   sample_transforms:
     - Decode: {}
diff --git a/configs/solov2/_base_/solov2_reader.yml b/configs/solov2/_base_/solov2_reader.yml
index 3c96396ac214c38f7937b0449c6550f9cbfe06d0..f21516235f46a1822387d48c73e7026763e7fc4c 100644
--- a/configs/solov2/_base_/solov2_reader.yml
+++ b/configs/solov2/_base_/solov2_reader.yml
@@ -1,4 +1,4 @@
-worker_num: 2
+worker_num: 8
 TrainReader:
   sample_transforms:
   - Decode: {}