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Moein Hosseini
Asked: 2012-06-25 07:18:59 +0800 CST

Extremely High Hard Disk Reading Usage

  • 772

My VPS configuration is as follows:

  • H.D.D = 25GB
  • RAM = 256MB
  • OS : CentOS 5.5

I received an email from server provider showing that my VPS H.D.D read usage is 137GB in one day. I have installed Kloxo as a Control Panel and APF for firewall. The one website is on my server that based on WordPress.

Could any one please explain this extremely use ? Or guide me to solve my problem ?

Thanks in advance :)

hard-drive centos io wordpress

3 Answers

  1. Probably you run low on RAM and it's using a lot's of swap which is on HDD.

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  2. Best Answer

    Start by installing Munin and graphing the I/O activity and memory utilisation. You'll quickly see if you're eating into SWAP.

    iotop is a great application that can show you HDD utilisation by process and will give you a graphical representation as to what process is eating up your HDD resources.

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  3. Odds are you need more memory. If the MySQL server for wordpress is installed on the same machine you are starving the MySQL database for memory.

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