[CentOS] Very slow disk I/O

[Gordon Messmer]

On 02/02/2015 08:52 PM, Jatin Davey wrote:
> So , You dont think that any configuration changes like increasing the 
> number of volumes or anything else will help in reducing the I/O wait 
> time ? 

No, because that won't change the number of heads that are present to 
service the IO requests, nor to segregate requests effectively. Your 
primary goals should be to reduce IO (investigate using LVM backed VMs 
instead of file-backed) or to increase hardware resources (possibly a 
larger number of smaller disks if SSDs are not in budget).