QPS drop more than 30% after upgrade from 5.2.3 to master with sysbench select_random_point.
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found/automation
type/enhancement
- Dominant language
- Go
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Description
## Bug Report
### What did you do?
Just run upgrade when run workload select_random_point , compare the qps after upgrade with the qps before upgrade.
### What did you expect to see?
QPS should not drop more than 5%.
### What did you see instead?

QPS drop more than 30%.
### What version of PD are you using (`pd-server -V`)?
/ # /pd-server -V
Release Version: v5.5.0-nightly
Edition: Community
Git Commit Hash: 4f5a78a9014a5001844facaabf2586b99aa2ed44
Git Branch: heads/refs/tags/v5.5.0-nightly
UTC Build Time: 2022-01-23 06:09:51
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