[CentOS] Very slow disk I/O

On 01/28/2015 03:32 PM, Jatin Davey wrote:
>
> Could someone point me on how to improve the disk I/O on my server and 
> reduce the wait time on I/O.

Fisrt of all, you should ensure how fast are your disks.
There are several methods to check that:
https://www.thomas-krenn.com/en/wiki/Linux_I/O_Performance_Tests_using_dd
But there are several aother way to achieve measurement.

If you notice some poor performance, then you can assume your disks are 
slow.