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**Phenomenon and reproduction steps**

**Root cause and solution**

**Impactions**

**Test method**

**Affected branch(es)**

* main

**Checklist**

- [ ] Dependencies update required
- [ ] Common bug (similar problem in other repo)

app/app/app.py

@@ -3,6 +3,8 @@
 import signal
 import socket
 import sys
+# import cProfile
+# import pstats
 
 import server
 from config import config
@@ -50,10 +52,15 @@ def main():
     except OSError:
         sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     sock.bind(('', config.listen_port))
-    server.server.run(workers=WORKER_NUMBER,
+    server.server.run(workers=1,
                       sock=sock,
                       protocol=sanic_logger.DFHttpProtocol)
 
 
 if __name__ == '__main__':
+    # pr = cProfile.Profile()
+    # pr.enable()
     main()
+    # pr.disable()
+    # pr.dump_stats('profile_results.prof')
+    # pr.print_stats()

app/app/application/application.py

@@ -1,6 +1,7 @@
 from sanic import Blueprint
 from sanic.response import json as Response
 from log import logger
+import cProfile
 
 from common.utils import json_response, format_response, app_exception, curl_perform
 from common.const import API_PREFIX, HTTP_OK
@@ -21,9 +22,13 @@
 async def application_log_l7_tracing(request):
     args = FlowLogL7Tracing(request.json)
     args.validate()
-
+    pr = cProfile.Profile()
+    pr.enable()
     status, response, failed_regions = await L7FlowTracing(
         args, request.headers).query()
+    pr.disable()
+    pr.dump_stats('profile_results.prof')
+    # pr.print_stats()
     response_dict, code = format_response("Flow_Log_L7_Tracing", status,
                                           response, args.debug, failed_regions)
     return Response(json_response(**response_dict),
@@ -38,8 +43,10 @@ async def application_log_l7_tracing(request):
 async def l7_flow_app_tracing(request):
     args = TracingCompletionByExternalAppSpans(request.json)
     args.validate()
+
     status, response, failed_regions = await TracingCompletion(
         args, request.headers).query()
+
     response_dict, code = format_response(
         "tracing-completion-by-external-app-spans", status, response,
         args.debug, failed_regions)