Re: MD RAID1 performance very different from non-RAID partition

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Luca Berra wrote:
> On Mon, Sep 17, 2007 at 10:58:11AM -0500, Jordan Russell wrote:
>> Goswin von Brederlow wrote:
>>> Compare the read ahead settings.
>> I'm not sure what you mean. There's a per-mount read ahead setting?
>>
> 
> per device
> 
> compare
> blockdev --getra /dev/sda2
> and 
> blockdev --getra /dev/md0

Ah.

256 on /dev/sda2 with md0 stopped
256 on /dev/sda2 with md0 active
256 on /dev/md0 with md0 active

-- 
Jordan Russell
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