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Date: Mon, 14 Feb 2011 10:15:07 +0100
From: Jens Axboe <jaxboe@fusionio.com>
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To: wu meng <james.wumeng@gmail.com>
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On 2011-02-14 09:08, wu meng wrote:
> Hi,
> 
> I've a problem on using fio:
> "buffered=bool If value is true, use buffered io. This is the opposite
> of the 'direct' option. Defaults to true."
> So what kind of buffer mean for this option? Is that mean kernel cache
> or user space buffer?

'direct' and 'buffered' control the same thing, they are just opposites.
Both refer to the use of kernel file cache bypass.

-- 
Jens Axboe