The experiment is conducted with Tencent cloud cvm, the deployment is listed in the following form.
| component | hardware | number |
|---|---|---|
| tidb | 8core, 16G SAS | 1 |
| pd. | 8core, 16G SAS | 1 (deployed with tidb server) |
| tikv | 8core, 32G SSD | 3 |
32 tables in the database, 1000000 records in each tables.
The io block of _sendmsg is high. Maybe something can be done on it.
Issue link tikv/tikv#8547