How to tell websites I/O use

Hi everyone, I have a question that I have looked high and low for an answer for and couldn't find one. That question is what lead me to this forum.

I am wanting to know how I can tell what my websites I/O usage is for each individual website on my shared cPanel hosting.

I am getting lots of spikes in just the I/O usage and I want to see if it's 1 or 2 sites that are the culprits.

I haven't been able to find any information other than that of the total I/O usage for the entire account. I need to know the individual website use so that I can address the issue and get it resolved one way or another.

I have 8 websites hosted on this account and it always runs great, I just want to try to lower the I/O use by the culprit/s websites.

All my other resources are very low in their use, it's just the I/O spikes that I am getting.

My hosting specs are:

2GB physical RAM
6GB virtual RAM
2MB I/O
30 entry processes

I am using CloudFlare Railgun if that matters.

Any helpful information will be much appreciated.

Thanks in advance.

I am abit confused, are these websites hosted on a shared hosting plan or VPS?

I haven't experience with cPanel to answer to your question, but like LuxinHost said, if you have speed issue you should migrate to a SSD hosting, it should resolve all your problems. SSD are up to 5000x times faster than HDD for IO/s.