dbsid

commit b558d0 causing 7%~14% performance degradation for sysbench oltp_update_index workload

2

## Bug Report ### What version of TiKV are you using? ### What operating system and CPU are you using? ### Steps to reproduce compare sysbench oltp_update_index workload with https://github.com/tikv/tikv/commit/b558d0bffc554c4c0094a483c65d95a50a4141cf...

add ch benchmark

3

### First-time contributors' checklist - [x] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs-cn) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) ### Which...

commit 68f99 causing sysbench oltp_read_write performance degradation 4.4%- 5.3%

6

## Bug Report ### What version of TiKV are you using? latest master ### What operating system and CPU are you using? ### Steps to reproduce daily sysbench run ###...

## Bug Report Please answer these questions before submitting your issue. Thanks! ### 1. Minimal reproduce step (Required) run tpcc 1k warehouse stability test ### 2. What did you expect...

compaction-filter: compare number_deletes to num_versions to reduce skips

2

### What is changed and how it works? Issue Number: Close #12729 #14460 What's Changed: ```commit-message ``` ### Related changes - PR to update `pingcap/docs`/`pingcap/docs-cn`: - Need to cherry-pick to...

lightning: support prepared statement and client stmt cache in logical import mode

9

### What problem does this PR solve? Issue Number: close #54850 Problem Summary: ### What changed and how does it work? ### Check List Tests - [x] Unit test -...

add sql tuning best practice into tuning guide

2

### First-time contributors' checklist - [x] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) ### Which...

Performance best practice

2

### First-time contributors' checklist - [x] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) ### Which...