diff --git a/plugins/postgresql/versions/14.4/install.sh b/plugins/postgresql/versions/14.4/install.sh
index 7b0f30705..aa686a4d3 100755
--- a/plugins/postgresql/versions/14.4/install.sh
+++ b/plugins/postgresql/versions/14.4/install.sh
@@ -50,6 +50,11 @@ Install_App()
 	else
 	    cpuCore="1"
 	fi
+
+	# for stable installation
+	if [ "$cpuCore" -gt "1" ];then
+		cpuCore=`echo "$cpuCore" | awk '{printf("%.f",($1)*0.8)}'`
+	fi
 	# ----- cpu end ------
 
 	if [ ! -f ${postgreDir}/postgresql-${VERSION}.tar.bz2 ];then