Re: Benchmarks: Linux Kernel RAID vs a Hardware RAID setup

[Keld Jørn Simonsen <keld@xxxxxxxx>]

On Tue, Jul 15, 2008 at 06:52:59PM -0800, Mr. James W. Laferriere wrote:
> 	Hello Richard ,
> 
> On Wed, 16 Jul 2008, Richard Scobie wrote:
> >Mr. James W. Laferriere wrote:
> >>    At what level (2.6.26) does one set readahead ?
> >>    I've searched 'mount' ,  'mdadm' ,  'Documentation/md.txt' .  Where 
> >>else should I look ?  Obviously I am missing something .
> >
> >Hi Jim,
> >
> >/sbin/blockdev --setra 65536 /dev/md5 gets it done here.
> >
> >Regards,
> >Richard
> 
> 	This does not bode well for my memory ,  It's already in my 
> optimizations shell script for startup .  I thought it looked very familiar 
> , But the usual places didn't bring it up .

There is a note on the wiki for preformance

Best regards
keld
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