[CentOS] Minimising disk I/O

Wed Dec 1 08:35:45 UTC 2010
Philix T.A <philixta at gmail.com>

Hi Keith,

Looks like the Swapping will happen once the PC memory is exhausted
1) So your point of placing SWAP place in another spare disk is a good
but we still have the Paging happening  which cant be avoided :)
2) Again moving the /var/log is another good part
but there are some locations under /var/  for eg /var/run which creates PID
 so why not moving /var/ to your spare instead of just moving /var/log

Just thoughts


On Tue, Nov 30, 2010 at 12:08 AM, Keith Roberts <keith at karsites.net> wrote:

> I've added a second IDE card to my system on the PCI bus,
> and added a small HDD on the Primary Master port for that
> IDE card.
> This drive shows up using the Gparted live CD as /dev/hde
> Which sounds about right.
> The other drives show up as /dev/hda (Primary Master) and
> /dev/hdc (Secondary Master). /dev/hdb is an empty removable
> drive caddy (Primary Slave) and /dev/hdd (Seconday Slave) is
> the DVD-RW drive.
> So I now have a maximum of 8 IDE ports - 4 on the IDE
> controller built into the motherboard (which BTW are all
> A-OK), and 4 on the IDE-PCI addon card.
> Vivard on the Ultimate Boot CD recognises the /dev/hde
> drive, as being on the PCI controller.
> I was also able to format the 2GB Samsung drive on /dev/hde
> as linux-swap using Gparted.
> The largest spare drive I have is ~7 GB, which might be
> enough for a linux-swap partition, and a /var/log partition.
> The idea is to have any logging and other intensive disk I/O
> on a spare disk drive, so as not wake up the main hard drive
> with the Linux root partition on it.
> I just want to write any 'disposable data' to a spare
> hard disk drive, and keep this seperated from stuff on my
> main root partition/linux installation.
> Kind Regards,
> Keith Roberts
> --
> In theory, theory and practice are the same;
> in practice they are not.
> This email was sent from my laptop with Centos 5.5
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