• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: preferred disk api for high bandwidth sample reading
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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




_______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
References: 
 >Re: preferred disk api for high bandwidth sample reading (From: tahome izwah <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: Paul Davis <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: tahome izwah <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: Living Memory <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: Brian Willoughby <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: Paul Davis <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: "Ross Bencina" <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: Paul Davis <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: "Ross Bencina" <email@hidden>)
 >Re: preferred disk api for high bandwidth sample reading (From: Jean-Daniel Dupas <email@hidden>)

  • Prev by Date: Re: preferred disk api for high bandwidth sample reading
  • Next by Date: Rosetta installation
  • Previous by thread: Re: preferred disk api for high bandwidth sample reading
  • Next by thread: Re: preferred disk api for high bandwidth sample reading
  • Index(es):
    • Date
    • Thread