about IO performance

tuning
https://www.yugabyte.com/blog/linux-performance-tuning-memory-disk-io/
https://blog.mi.hdm-stuttgart.de/index.php/2022/04/01/improve-your-storage-i-o-performance-today/

https://medium.com/vswe/讀檔-cff16c651cb0
https://medium.com/databasss/on-disk-io-part-2-more-flavours-of-io-c945db3edb13