Re: poor write performances with RAID 5 Raidframe

["Jonathan A. Kollasch" <jakllsch%kollasch.net@localhost>]

On Sun, Nov 30, 2014 at 12:18:59AM +0100, Emile `iMil' Heitor wrote:
> 
> Hi,
> 
> I'm witnessing poor performances while writing to a RAID 5 Raidframe I setup
> to be my home NAS a couple of months ago.
> Following some documentations, tutorials, and mailing-list posts, I think I
> had everything aligned right as the following configuration suggests:
~~~~~
> START layout
> # sectPerSU SUsPerParityUnit SUsPerReconUnit RAID_level_5
> 64 1 1 5
~~~~~
> # newfs -O2 -b64k -I dk0
>

This might not be the best configuration; you've got two RAIDframe
SUs per FFS block.

	Jonathan Kollasch