Re: Understanding bonnie++ results

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On Fri, Feb 29, 2008 at 09:24:42AM +0100, Franck Routier wrote:
> By the way, my server in not really in a production state, and the
> hardware is running, so I might take some time to do sensible tests if
> anyone has ideas of what a good test would be...

I would like you to investigate why random writes are so relatively
slow with raid10,f2. You could run the bonnie+ tests, and then watch
via an iostat how each of the disks are performing, compared to a 
HW RAID10. 

And also see if it matters if the resync has completed or not.

Best regards
keld

> 
> > I like to get such results of comparison between HW and SW raid.
> > How advanced are Adaptec controllers considered these  days? 
> > My thoughts are that SW raid is faster than HW raid, because Neil and the
> > other people here together can develop more sophisticated algorithms,
> > but I would like some hard figures to back up that thought.
> 
> 
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