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Date: Wed, 04 Apr 2007 10:24:09 -0400
From: Phillip Susi <psusi@cfl.rr.com>
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To: Ameya Mitragotri <ameya.mitragotri@gmail.com>
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Subject: Re: fadvise+sync_file_range Vs O_DIRECT
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Ameya Mitragotri wrote:
>> Did you use overlapped aio with O_DIRECT or just send down one request
>> at a time?
> 
> The app sends the requests one at a time

For best results, you need to send down several requests at once so the 
pipeline does not stall in between requests.