[CentOS] Disk read io very high, but no process perform io read

Fri Mar 12 13:09:45 UTC 2021
Adrian Sevcenco <Adrian.Sevcenco at spacescience.ro>

On 3/12/21 12:25 PM, yf chu wrote:
> The applications on all those servers are same. They are working on same data.
> I still don't know why the size of buff/cache is different between different servers.
You might want to check the kernel threads...
If you use md arrays you can have very high load during md check..