diff --git a/core/src/index/unittest/test_ivf.cpp b/core/src/index/unittest/test_ivf.cpp
index 3b3e557c4d77637468f086b631b985ef3b8a8380..4aaddb108b6e454e7d0376283e091b14f28be0ce 100644
--- a/core/src/index/unittest/test_ivf.cpp
+++ b/core/src/index/unittest/test_ivf.cpp
@@ -96,10 +96,10 @@ class ParamGenerator {
             auto tempconf = std::make_shared<knowhere::IVFPQCfg>();
             tempconf->d = DIM;
             tempconf->gpu_id = device_id;
-            tempconf->nlist = 100;
-            tempconf->nprobe = 16;
+            tempconf->nlist = 25;
+            tempconf->nprobe = 4;
             tempconf->k = K;
-            tempconf->m = 8;
+            tempconf->m = 4;
             tempconf->nbits = 8;
             tempconf->metric_type = knowhere::METRICTYPE::L2;
             return tempconf;