[CentOS] slugishness

Fri Jul 3 13:37:16 UTC 2009
Robert Heller <heller at deepsoft.com>

At Fri, 03 Jul 2009 08:30:43 -0400 CentOS mailing list <centos at centos.org> wrote:

> Hi all,
> I have a 3G AM2 quad core CPU... x86_64 centos 5.3
> When I am doing backing up to my external USB drive
> my system becomes sluggish. Clicking on a thunderbird compose
> takes some time to pop up the window. Typeing doesnt keep up etc...
> Is there something I can change so this backup doesnt slow my system
> down so much? I dont see HOW it can be taking so much CPU.
> top at times shows 0 idle or 11% idle from a USB backup.
> Thanks for any suggestions.

Define 'backing up to my external USB drive':

Are you:

	1) Using dump, tar, cpio, or cp?
	2) Are you compressing the backup? With gzip or bzip?
	3) Are you using zip?

If you are using bzip, bzip is a cpu hog.

How much memory do you have?

What kind of disks do you have? IDE? SATA?  If SATA, is the controller
in AHCI mode or IDE mode?

> Jerry
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Robert Heller             -- 978-544-6933
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