Raid 5 performance

[Lennart Sorensen]

On Tue, Sep 21, 2004 at 04:16:49PM -0400, Martin Duclos wrote:
> I'm using software raid.
> 
> The question is not really about what hardware configuration will make it 
> better, rather, I want to know where to look to get nubmers. I want to know 
> if the io is the bottleneck or if the cpu is the bottleneck. I'm not really 
> interested in changing my setup. I am just curious as to ways I can monitor 
> performance of that system in particular. BTW I have 4 ide controller as in 
> a seperate cable for every drive.

For most fileservers, network IO is the bottleneck.

After that probably disk speed or cpu speed, but usually disk speed
unless the cpu is rather slow.  ram helps cache which helps out the disk
speed a bit.

Lennart Sorensen
--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml