Upgrade TiDB from V5.3 to V7.5.1

Note:
This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: tidbV5.3升级V7.5.1

| username: xiaoqiao

[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version]
[Reproduction Path] What operations were performed when the issue occurred
[Encountered Issue: Issue Phenomenon and Impact]
[Resource Configuration] Go to TiDB Dashboard - Cluster Info - Hosts and take a screenshot of this page
[Attachments: Screenshots/Logs/Monitoring]
Upgrading has slightly improved performance, with the biggest improvement being a significant reduction in memory usage. TiDB has put a lot of effort into memory optimization.

| username: 这里介绍不了我 | Original post link

Did you upgrade directly across versions, or did you upgrade to version 6 first?

| username: 洪七表哥 | Original post link

awesome

| username: TiDBer_JUi6UvZm | Original post link

Please share more usage scenarios of version 7 for reference.

| username: Jack-li | Original post link

Let’s see everyone’s experience.

| username: Billmay表妹 | Original post link

You can post it here!

| username: xiaoqiao | Original post link

Directly collapsed during version upgrade.