[CentOS] Minimising disk I/O

Blake Hudson blake at ispn.net
Mon Nov 29 12:11:19 EST 2010

I would suggest looking at articles that focus on laptop power
consumption, they typically have a section dedicated to disk accesses
and how to spin the disk down as much as possible since this has
traditionally been one of the better ways to minimize power consumption
on a laptop.

This article has some good tips - especially relating to processes that
might be accessing the disk frequently


-------- Original Message  --------
Subject: [CentOS] Minimising disk I/O
From: Keith Roberts <keith at karsites.net>
To: CentOS mailing list <centos at centos.org>
Date: Monday, November 29, 2010 9:50:04 AM
> I'd like to get disk I/O down to a minimum for my new Centos 
> 5.5 installation.
> The machine will not be used as a web server anymore, as 
> that's now hosted on a cloud platform. So there are no HTTP 
> requests coming down the line.
> If I move the SWAP partition and /var/log/ to a small spare 
> drive, and install Centos on the new larger drive, is there 
> anything else that would cause disk activity on the main 
> drive, when the machine is running but not in use?
> fetchmail will be collecting my email hourly, but I'd like 
> the drive to spin down and go into hibernate mode if 
> possible.
> I have a backup drive that gets woken up once an hour to 
> backup email, and also during the night to make backups 
> of specified directories every 24 hours.
> Apart from that, the drive is not in use, unless I run a 
> backup script manually.
> So I'm hoping to do the same for the main drive if that's 
> posible?
> Kind Regards,
> Keith Roberts

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