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

Fri Mar 5 15:37:14 UTC 2021
Matthew Miller <mattdm at mattdm.org>

On Fri, Mar 05, 2021 at 03:54:14PM +0800, yf chu wrote:
> We have experienced a very weird problem. The load of the server machine is very high. We use "pidstat" and find that the disk read io is very high.  

Is this system a VM?

Matthew Miller
<mattdm at fedoraproject.org>
Fedora Project Leader