for a 100T cluster after restore, the QPS decreased and became unstable in the first two hours [restore for 5269]

[ti-chi-bot]

Bug Report

What version of Kubernetes are you using?

What version of TiDB Operator are you using?
gcr.io/pingcap-public/dbaas/tikv:v6.5.4-20230822-1692700456
gcr.io/pingcap-public/dbaas/tidb:v6.5.4-20230822-1692700456
gcr.io/pingcap-public/dbaas/pd:v6.5.4-20230822-1692700456
gcr.io/pingcap-public/dbaas/br:v6.5.4-20230822-1692700456

What storage classes exist in the Kubernetes cluster and what are used for PD/TiKV pods?

What's the status of the TiDB cluster pods?

What did you do?

1. do volumerestore(100T)
2. add workload on restore cluster

What did you expect to see?

1. the QPS of restore cluster is same with backup cluster

What did you see instead?

1. the QPS decreased and became unstable in the first two hours
   

[ti-chi-bot]

This issue is restored for #5269, it originally created at 2023-08-25 03:25:24.