linux-kernel - Re: fadvise+sync_file_range Vs O

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Date:	Wed, 04 Apr 2007 10:24:09 -0400
From:	Phillip Susi <psusi@....rr.com>
To:	Ameya Mitragotri <ameya.mitragotri@...il.com>
CC:	linux-kernel@...r.kernel.org, suparna@...ibm.com, pbadari@...il.com
Subject: Re: fadvise+sync_file_range Vs O_DIRECT

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.


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