From 43b048772567baabbbed0acd9b4a8d27cb628a2a Mon Sep 17 00:00:00 2001
From: wangzaijun <wzjhelloworld@qq.com>
Date: Fri, 29 May 2026 08:00:18 +0000
Subject: [PATCH] add log for pd nixl

---
 .../decode_node_impl/decode_trans_process.py  | 28 ++++++++++++-------
 .../pd_nixl/nixl_kv_transporter.py            |  7 ++++-
 2 files changed, 24 insertions(+), 11 deletions(-)

diff --git a/lightllm/server/router/model_infer/mode_backend/pd_nixl/decode_node_impl/decode_trans_process.py b/lightllm/server/router/model_infer/mode_backend/pd_nixl/decode_node_impl/decode_trans_process.py
index 7913865406..3bd61815a3 100644
--- a/lightllm/server/router/model_infer/mode_backend/pd_nixl/decode_node_impl/decode_trans_process.py
+++ b/lightllm/server/router/model_infer/mode_backend/pd_nixl/decode_node_impl/decode_trans_process.py
@@ -177,7 +177,7 @@ def dispatch_task_loop(self):
                         self.waiting_dict[task.get_key()] = task
                     else:
                         task.start_trans_time = time.time()
-                        self.success_queue.put((None, task))
+                        self.success_queue.put((None, None, task))
 
             # up status
             task = trans_task_group.task_list[0]
@@ -335,7 +335,10 @@ def read_page_to_mems_loop(self):
         while True:
             trans_task: NIXLChunckedTransTask = self.ready_page_task_queue.get()
             # 将数据写回 mem manger
+            copy_start_event = torch.cuda.Event(enable_timing=True)
+            copy_end_event = torch.cuda.Event(enable_timing=True)
             with torch.cuda.stream(stream=self.copy_cuda_stream):
+                copy_start_event.record(self.copy_cuda_stream)
                 cur_mem = self.mem_managers[self.device_id]
                 cur_mem.read_page_kv_move_buffer_to_mem(
                     mem_indexes=trans_task.mem_indexes,
@@ -344,22 +347,21 @@ def read_page_to_mems_loop(self):
                     mem_managers=self.mem_managers,
                     dp_world_size=self.dp_world_size,
                 )
-                sync_event = torch.cuda.Event()
-                sync_event.record()
+                copy_end_event.record(self.copy_cuda_stream)
 
-            self.success_queue.put((sync_event, trans_task))
+            self.success_queue.put((copy_end_event, copy_start_event, trans_task))
         return
 
     @log_exception
     def success_loop(self):
         torch.cuda.set_device(self.device_id)
         while True:
-            sync_event, trans_task = self.success_queue.get()
+            copy_end_event, copy_start_event, trans_task = self.success_queue.get()
             trans_task: NIXLChunckedTransTask = trans_task
-            sync_event: Optional[torch.cuda.Event] = sync_event
-            # 兼容传输kv 数量为0的时候， sync_event 为 None的情况。
-            if sync_event is not None:
-                sync_event.synchronize()
+            read_page_gpu_time_ms = -1.0
+            if copy_end_event is not None:
+                copy_end_event.synchronize()
+                read_page_gpu_time_ms = copy_start_event.elapsed_time(copy_end_event)
 
             if trans_task.nixl_dst_page_index is not None:
                 self.page_index_queue.put(trans_task.nixl_dst_page_index)
@@ -369,7 +371,13 @@ def success_loop(self):
 
             ret = trans_task.createRetObj()
             self.task_out_queue.put(ret)
-            logger.info(f"trans task ret success:{ret} cost time: {trans_task.transfer_time()} s")
+            if read_page_gpu_time_ms >= 0:
+                logger.info(
+                    f"trans task ret success:{ret} cost time: {trans_task.transfer_time()} s "
+                    f"read_page_gpu_time: {read_page_gpu_time_ms:.3f} ms"
+                )
+            else:
+                logger.info(f"trans task ret success:{ret} cost time: {trans_task.transfer_time()} s")
 
     @log_exception
     def fail_loop(self):
diff --git a/lightllm/server/router/model_infer/mode_backend/pd_nixl/nixl_kv_transporter.py b/lightllm/server/router/model_infer/mode_backend/pd_nixl/nixl_kv_transporter.py
index 134fbd5027..dd4b1851bd 100644
--- a/lightllm/server/router/model_infer/mode_backend/pd_nixl/nixl_kv_transporter.py
+++ b/lightllm/server/router/model_infer/mode_backend/pd_nixl/nixl_kv_transporter.py
@@ -1,5 +1,6 @@
 import pickle
 import copy
+import time
 from dataclasses import dataclass
 from collections import defaultdict
 from typing import Dict, List, Any, Optional, Tuple
@@ -63,6 +64,8 @@ def connect_add_remote_agent(self, remote_agent: NixlAgentMetadata):
         if remote_agent.agent_name in self.remote_agents:
             return
 
+        start_time = time.time()
+
         peer_name = self.nixl_agent.add_remote_agent(remote_agent.agent_metadata)
         if isinstance(peer_name, bytes):
             peer_name = peer_name.decode()
@@ -77,7 +80,9 @@ def connect_add_remote_agent(self, remote_agent: NixlAgentMetadata):
         )
         remote_agent.page_xfer_handles = kv_page_xfer_handles
 
-        logger.info(f"Added remote agent {peer_name} with mem desc {page_mem_desc}")
+        logger.info(
+            f"Added remote agent {peer_name} with mem desc {page_mem_desc} cost time: {time.time() - start_time} s"
+        )
 
         self.remote_agents[remote_agent.agent_name] = remote_agent
         return