diff --git a/src/observer/omt/ob_tenant.cpp b/src/observer/omt/ob_tenant.cpp
index 8e07796c5..92e88b258 100644
--- a/src/observer/omt/ob_tenant.cpp
+++ b/src/observer/omt/ob_tenant.cpp
@@ -1015,15 +1015,36 @@ void ObTenant::set_unit_max_cpu(double cpu)
 {
   int tmp_ret = OB_SUCCESS;
   unit_max_cpu_ = cpu;
-  const double default_cfs_period_us = 100000.0;
-  int32_t cfs_quota_us = static_cast<int32_t>(default_cfs_period_us * cpu);
-  if (is_sys_tenant(id_)) {
-    cfs_quota_us = -1;
-  }
-  if (cgroup_ctrl_.is_valid()
-      && !is_meta_tenant(id_)
-      && OB_SUCCESS != (tmp_ret = cgroup_ctrl_.set_cpu_cfs_quota(cfs_quota_us, id_))) {
-    LOG_WARN_RET(tmp_ret, "set cpu cfs quota failed", K(tmp_ret), K_(id), K(cfs_quota_us));
+  int32_t cfs_period_us = 0;
+  int32_t cfs_period_us_new = 0;
+  if (!cgroup_ctrl_.is_valid() || is_meta_tenant(id_)) {
+    // do nothing
+  } else if (is_sys_tenant(id_)) {
+    int32_t sys_cfs_quota_us = -1;
+    if (OB_TMP_FAIL(cgroup_ctrl_.set_cpu_cfs_quota(sys_cfs_quota_us, id_))) {
+      LOG_WARN_RET(tmp_ret, "set sys tennat cpu cfs quota failed", K(tmp_ret), K_(id), K(sys_cfs_quota_us));
+    }
+  } else if (OB_TMP_FAIL(cgroup_ctrl_.get_cpu_cfs_period(cfs_period_us_new, id_, INT64_MAX))) {
+    LOG_WARN_RET(tmp_ret, "fail get cpu cfs period", K_(id));
+  } else {
+    uint32_t loop_times = 0;
+    // to avoid kernel scaling cfs_period_us after get cpu_cfs_period,
+    // we should check whether cfs_period_us has been changed after set cpu_cfs_quota.
+    while (OB_SUCCESS == tmp_ret && cfs_period_us_new != cfs_period_us) {
+      cfs_period_us = cfs_period_us_new;
+      int32_t cfs_quota_us = static_cast<int32_t>(cfs_period_us * cpu);
+      if (OB_TMP_FAIL(cgroup_ctrl_.set_cpu_cfs_quota(cfs_quota_us, id_))) {
+        LOG_WARN_RET(tmp_ret, "set cpu cfs quota failed", K_(id), K(cfs_quota_us));
+      } else if (OB_TMP_FAIL(cgroup_ctrl_.get_cpu_cfs_period(cfs_period_us_new, id_, INT64_MAX))) {
+        LOG_ERROR_RET(tmp_ret, "fail get cpu cfs period", K_(id));
+      } else {
+        loop_times++;
+        if (loop_times > 3) {
+          tmp_ret = OB_ERR_UNEXPECTED;
+          LOG_ERROR_RET(tmp_ret, "cpu_cfs_period has been always changing, thread may be hung", K_(id), K(cfs_period_us), K(cfs_period_us_new), K(cfs_quota_us));
+        }
+      }
+    }
   }
 }