diff --git a/deps/oblib/src/lib/thread/protected_stack_allocator.cpp b/deps/oblib/src/lib/thread/protected_stack_allocator.cpp
index 7f2edf3405..24309bdacc 100644
--- a/deps/oblib/src/lib/thread/protected_stack_allocator.cpp
+++ b/deps/oblib/src/lib/thread/protected_stack_allocator.cpp
@@ -145,7 +145,6 @@ void StackMgr::insert(ObStackHeader *header)
     header->next_ = dummy_.next_;
     dummy_.next_->prev_ = header;
     dummy_.next_ = header;
-    add_flow(header, 1);
     mutex_.unlock();
   }
 }
@@ -158,22 +157,9 @@ void StackMgr::erase(ObStackHeader *header)
     header->prev_->next_ = header->next_;
     header->next_->prev_ = header->prev_;
     header->prev_ = header->next_ = header;
-    add_flow(header, 0);
     mutex_.unlock();
   }
 }
 
-void StackMgr::add_flow(ObStackHeader *header, bool is_alloc)
-{
-  int ret = databuff_printf(flow_print_buf_, sizeof(flow_print_buf_), flow_print_pos_,
-                            "%p %d %ld %ld %s\n", header, is_alloc, header->size_, GETTID(), lbt());
-  if (OB_SUCC(ret) && flow_print_pos_ > sizeof(flow_print_buf_)/2) {
-    common::allow_next_syslog();
-    _LOG_INFO("DUMP STACK FLOW:\n%.*s", static_cast<int32_t>(flow_print_pos_), flow_print_buf_);
-    flow_print_pos_ = 0;
-  }
-}
-
-
 }  // lib
 }  // oceanbase
diff --git a/deps/oblib/src/lib/thread/protected_stack_allocator.h b/deps/oblib/src/lib/thread/protected_stack_allocator.h
index 061918792b..c0c334cb51 100644
--- a/deps/oblib/src/lib/thread/protected_stack_allocator.h
+++ b/deps/oblib/src/lib/thread/protected_stack_allocator.h
@@ -54,7 +54,6 @@ class StackMgr
   friend class ObMemoryCutter;
 public:
   StackMgr()
-    : flow_print_pos_(0)
   {
     dummy_.prev_ = dummy_.next_ = &dummy_;
   }
@@ -62,12 +61,8 @@ public:
   void erase(ObStackHeader *);
   ObStackHeader *begin() { return dummy_.next_; }
   ObStackHeader *end() { return &dummy_; }
-private:
-  void add_flow(ObStackHeader *header, bool is_alloc);
 private:
   lib::ObMutex mutex_;
-  char flow_print_buf_[8192];
-  int64_t flow_print_pos_;
   ObStackHeader dummy_;
 };