diff --git a/deps/oblib/src/lib/ob_define.h b/deps/oblib/src/lib/ob_define.h
index adae82dcbf..5d6f1c1c67 100644
--- a/deps/oblib/src/lib/ob_define.h
+++ b/deps/oblib/src/lib/ob_define.h
@@ -844,8 +844,8 @@ const double MONITOR_MEM_FACTOR = 0.01;
 const double KVCACHE_FACTOR = TENANT_RESERVE_MEM_RATIO;
 
 const double MIN_TENANT_QUOTA = .5;
-const double OB_DTL_CPU = (sysconf(_SC_NPROCESSORS_ONLN) <= 4) ? 1. : 5.;
-const double OB_DATA_CPU = (sysconf(_SC_NPROCESSORS_ONLN) <= 4) ? 1. : 2.5;
+const double OB_DTL_CPU = 5.;
+const double OB_DATA_CPU = 2.5;
 
 const uint64_t OB_INVALID_TENANT_ID = 0;
 const uint64_t OB_SYS_TENANT_ID = 1;
diff --git a/src/observer/omt/ob_multi_tenant.cpp b/src/observer/omt/ob_multi_tenant.cpp
index 5ce9a37cf9..f1b4a4ec67 100644
--- a/src/observer/omt/ob_multi_tenant.cpp
+++ b/src/observer/omt/ob_multi_tenant.cpp
@@ -687,17 +687,20 @@ int ObMultiTenant::create_hidden_sys_tenant()
 int ObMultiTenant::create_virtual_tenants()
 {
   int ret = OB_SUCCESS;
+  const int64_t phy_cpu_cnt = sysconf(_SC_NPROCESSORS_ONLN);
+  const double data_cpu = (phy_cpu_cnt <= 4) ? 1.0 : OB_DATA_CPU;
+  const double dtl_cpu = (phy_cpu_cnt <= 4) ? 1.0 : OB_DTL_CPU;
 
   if (OB_FAIL(create_tenant_without_unit(
                          OB_DATA_TENANT_ID,
-                         OB_DATA_CPU,
-                         OB_DATA_CPU))) {
+                         data_cpu,
+                         data_cpu))) {
     LOG_ERROR("add data tenant fail", K(ret));
 
   } else if (OB_FAIL(create_tenant_without_unit(
                          OB_DTL_TENANT_ID,
-                         OB_DTL_CPU,
-                         OB_DTL_CPU))) {
+                         dtl_cpu,
+                         dtl_cpu))) {
     LOG_ERROR("add DTL tenant fail", K(ret));
 
   } else {
diff --git a/src/observer/omt/ob_multi_tenant.h b/src/observer/omt/ob_multi_tenant.h
index 6120e14c44..7bac65ae93 100644
--- a/src/observer/omt/ob_multi_tenant.h
+++ b/src/observer/omt/ob_multi_tenant.h
@@ -37,10 +37,6 @@ class ObRequest;
 namespace omt
 {
 class ObTenantConfig;
-#define VIRTUAL_TENANTS_CPU_RESERVED_QUOTA \
-  (GCONF.user_location_cpu_quota() + GCONF.sys_location_cpu_quota() \
-  + GCONF.root_location_cpu_quota() + GCONF.core_location_cpu_quota() \
-  + OB_SVR_BLACKLIST_CPU + OB_DATA_CPU + OB_DTL_CPU + OB_DIAG_CPU)
 
 struct ObCtxMemConfig
 {