HelloKevinTian opened a new issue, #11784:
URL: https://github.com/apache/apisix/issues/11784
### Description
HI
I use apisix as my gateway layer in k8s, and I found that the
upstream_latency of some http requests has increased for no reason. Here is the
upstream configuration:
```
{
"nodes": [
{
"host": "some-of-my-service.xxx-service",
"port": 8080,
"weight": 100
}
],
"timeout": {
"connect": 30,
"send": 30,
"read": 30
},
"type": "roundrobin",
"hash_on": "vars",
"scheme": "http",
"pass_host": "pass",
"name": "some_of_my_upstream",
"keepalive_pool": {
"idle_timeout": 60,
"requests": 1000,
"size": 320
}
}
```
The HTTP response p95 of this upstream server is 3ms, and the HTTP qps is
100/sec. However, thousands of upstream_latency messages with a latency greater
than 1000ms appear every day.
### Environment
- APISIX version (run `apisix version`): 2.15
- Operating system (run `uname -a`): k8s-apisix-pod
- OpenResty / Nginx version (run `openresty -V` or `nginx -V`):
- etcd version, if relevant (run `curl
http://127.0.0.1:9090/v1/server_info`): v3.5
- APISIX Dashboard version, if relevant:
- Plugin runner version, for issues related to plugin runners:
- LuaRocks version, for installation issues (run `luarocks --version`):
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