diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index c5a26c5c10..55df80ca44 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -58,7 +58,7 @@ int32_t tsNumOfMnodeQueryThreads = 4;
 int32_t tsNumOfMnodeFetchThreads = 1;
 int32_t tsNumOfMnodeReadThreads = 1;
 int32_t tsNumOfVnodeQueryThreads = 4;
-float   tsRatioOfVnodeStreamThreads = 1.5F;
+float   tsRatioOfVnodeStreamThreads = 0.5F;
 int32_t tsNumOfVnodeFetchThreads = 4;
 int32_t tsNumOfVnodeRsmaThreads = 2;
 int32_t tsNumOfQnodeQueryThreads = 4;