I / O performance optimization

Original please indicate the source: https://www.cnblogs.com/agilestyle/p/11525014.html

 

Linux system I / O stack FIG.

 

I / O Performance

 

According to index to find tools

 

The tool of search index

 

iostat、vmstat、pidstat

1. First found disk I / O performance bottleneck with the iostat;
2. And then with pidstat, locate the process leading to bottlenecks;
3. Then I / O behavior analysis process;
4. Finally, the application of the principle, analyze the source of these I / O's.

 

Reference

https://time.geekbang.org/column/article/79001