diff --git a/logging_json/README.rst b/logging_json/README.rst
index 4d60884..cb07dd2 100644
--- a/logging_json/README.rst
+++ b/logging_json/README.rst
@@ -12,3 +12,7 @@ The json logging is activated with the environment variable
 In order to have the logs from the start of the server, you should add
 ``logging_json`` in the ``--load`` flag or in the ``server_wide_modules``
 option in the configuration file.
+
+When the module is loaded, each HTTP request is tagged with a unique
+``request_id`` so all logs produced while handling that request can be
+correlated.
diff --git a/logging_json/json_log.py b/logging_json/json_log.py
index 3fcc796..8441667 100644
--- a/logging_json/json_log.py
+++ b/logging_json/json_log.py
@@ -3,9 +3,12 @@
 import logging
 import os
 import threading
+import uuid
 
 from distutils.util import strtobool
 
+import openerp.http as http
+
 _logger = logging.getLogger(__name__)
 
 try:
@@ -24,12 +27,25 @@ class OdooJsonFormatter(jsonlogger.JsonFormatter):
     def add_fields(self, log_record, record, message_dict):
         record.pid = os.getpid()
         record.dbname = getattr(threading.currentThread(), 'dbname', '?')
+        record.request_id = getattr(threading.currentThread(), 'request_uuid', None)
+        record.perf_info = getattr(record, 'perf_info', '')
         _super = super(OdooJsonFormatter, self)
         return _super.add_fields(log_record, record, message_dict)
 
 
 if is_true(os.environ.get('ODOO_LOGGING_JSON')):
     format = ('%(asctime)s %(pid)s %(levelname)s'
-              '%(dbname)s %(name)s: %(message)s')
+              '%(dbname)s %(request_id)s %(name)s: %(message)s %(perf_info)s')
     formatter = OdooJsonFormatter(format)
     logging.getLogger().handlers[0].formatter = formatter
+
+
+_original_webrequest_init = http.WebRequest.__init__
+
+
+def new_webrequest_init(self, httprequest):
+    _original_webrequest_init(self, httprequest)
+    threading.currentThread().request_uuid = uuid.uuid4().hex
+
+
+http.WebRequest.__init__ = new_webrequest_init