> On 11/17/11 14:14, Adriano dos Santos Fernandes wrote:
>> On 17/11/2011 07:52, Dmitry Yemanov wrote:
>>> The only way to guarantee ordered writes is to flush individual pages
>>> and this is what FW=ON does.
>> Or to flush group of independent pages at once, like I proposed. I think
>> this can be a great improvement for FW=ON.
>
> The suggestion appears very interesting, even with average size of group
> == 2 engine shoudl run almost twice faster.
You are too optimistic :) If independent pages are not adjacent, there will
be much less performance win. And, note, most heavy case (flush on commit)
is already optimized.
Regards,
Vlad
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