Buffering middleware often suffers from high latency about traefik HOT 4 OPEN

This problem has appeared for a long time. This problem has been discovered since version v2.9.*. This problem also occurs after upgrading to the latest version v2.10.7.

from traefik.

Hello @kk-kwok and thanks for reaching out,

This problem has appeared for a long time. This problem has been discovered since version v2.9.*. This problem also occurs after upgrading to the latest version v2.10.7.

Does it mean that the problem is not here in older versions?

Could you provide a minimal reproducible case (for instance, full Kubernetes manifest to reproduce the issue)?

In the meantime, if any community member can help us find verified steps to reproduce and fix the issue, we would love the help.

from traefik.

Hello @kevinpollet .
Thank you very much for your help.

I mean I was using traefik v2.9 when I first discovered this problem. Then I updated to the latest version v2.10.7 and still have the same problem.

This problem was discovered in our production environment k8s cluster. I just tried to deploy a simple nginx deployment in a new namespace, and then used the wrk command to conduct a simple stress test. This problem did not occur.

from traefik.

When using high concurrency continuous stress testing, there is an overall high delay.

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.24
        ports:
        - containerPort: 80

---
apiVersion: v1
kind: Service

metadata:
  annotations:
    service.cloud.tencent.com/direct-access: "true"
    service.kubernetes.io/topology-aware-hints: auto
  name: nginx

spec:
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 80
  selector:
    app: nginx
  type: ClusterIP

---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: test-xxx-com
spec:
  entryPoints:
    - web
  routes:
    - match: Host(`test.xxx.com`)
      kind: Rule
      middlewares:
        - name: max-request-body
        - name: gzip-compress
      services:
        - name: nginx
          namespace: default
          port: 80
          passHostHeader: true

wrk -c 1000 -t 600 -d 60s --timeout=10 -H 'Host: test.xxx.com' http://{ip}

from traefik.