XFS tune to adaptec ASR71605

[Dave Chinner]

On Tue, May 06, 2014 at 03:51:49PM +0200, Emmanuel Florac wrote:
> Le Tue, 6 May 2014 14:14:35 +0100 (BST)
> Steve Brooks <steveb at mcs.st-and.ac.uk> écrivait:
> 
> > Thanks for the reply Emmanuel, I installed and rua bonnie++ although
> > I will need to research the results
> 
> Yup, they're... weird :) Write speed is abysmal, but random seeks very
> high. Please try my settings so that we can compare the numbers more
> directly:

Friends don't let friends use bonnie++ for benchmarking storage.
The numbers you get will be irrelevant to you application, and it's
so synthetic is doesn't reflect any real-world workload at all.

The only useful benchmark for determining if changes are going to
improve application performance is to measure your application's
performance.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com