jujiale opened a new issue, #10606:
URL: https://github.com/apache/apisix/issues/10606
### Description
hello:
I find in our prd apisix server, in grafana, the request latency is lower
than upstream latency ,such as the following picture, I want to know if have
any scenarios cloud result in such situation.
as I find in logutil.lua
the request latency calculated by **ngx.now() - ngx.req.start_time()** while
upstream_latency is **$upstream_response_time**, so why the follwing picture's
problem is occured.
need your help, thanks a lot.

### Environment
- APISIX version (run `apisix version`):2.12.0
- Operating system (run `uname -a`):3.10.0-1160.71.1.el7.x86_64
- OpenResty / Nginx version (run `openresty -V` or `nginx -V`):
openresty/1.21.4.1
- etcd version, if relevant (run `curl
http://127.0.0.1:9090/v1/server_info`):3.5.0
- APISIX Dashboard version, if relevant:
- Plugin runner version, for issues related to plugin runners:
- LuaRocks version, for installation issues (run `luarocks --version`):
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]