diff --git a/src/dnode/src/dnodeVRead.c b/src/dnode/src/dnodeVRead.c
index 8064f4d4964d0ffe94cd2e7e05a2117c4c26fefc..75e5ff7b6bdfe3cdf1d10ee5ed24e5359b850c87 100644
--- a/src/dnode/src/dnodeVRead.c
+++ b/src/dnode/src/dnodeVRead.c
@@ -49,7 +49,7 @@ static taos_qset       readQset;
 int32_t dnodeInitVnodeRead() {
   readQset = taosOpenQset();
 
-  readPool.min = tsNumOfCores / 2;
+  readPool.min = (tsNumOfCores * 2) / 3;
   readPool.max = tsNumOfCores * tsNumOfThreadsPerCore;
   if (readPool.max <= readPool.min * 2) readPool.max = 2 * readPool.min;
   readPool.readWorker = (SReadWorker *)calloc(sizeof(SReadWorker), readPool.max);