Re: preferred disk api for high bandwidth sample reading
Re: preferred disk api for high bandwidth sample reading
- Subject: Re: preferred disk api for high bandwidth sample reading
- From: "Ross Bencina" <email@hidden>
- Date: Tue, 5 Jan 2010 22:08:52 +1100
Thanks Jean-Daniel
From reading this its a little bit unclear whether the Core Frameworks file
io layer (PBReadForkAsync etc) sits on top of POSIX AIO, next to it, or
underneath it. I assume CF is implemented in terms of POSIX AIO (anyone ?)
Best wishes
Ross.
----- Original Message -----
From: "Jean-Daniel Dupas" <email@hidden>
To: "Ross Bencina" <email@hidden>
Cc: "coreaudio-api List" <email@hidden>
Sent: Tuesday, January 05, 2010 8:13 PM
Subject: Re: preferred disk api for high bandwidth sample reading
Le 5 janv. 2010 à 07:38, Ross Bencina a écrit :
Paul Davis wrote:
On Windows you can set flags to disable OS level caching/buffering when
you
open a file handle (with the restriction of being required to perform IO
in
page aligned blocks).
the same thing is possible with unix/posix APIs too.
Can you give some links/keywords please? What do you currently use in
Ardour? read/write one buffer at a time using posix file io?
http://developer.apple.com/mac/library/documentation/Performance/Conceptual/FileSystem/FileSystem.html
Especially the "File-System Performance Tips" section.
-- Jean-Daniel
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