Re: real-time threaded IO with low latency (audio)

David Olofson (audiality@swipnet.se)
Sun, 25 Jul 1999 20:25:13 +0200


Mark Hahn wrote:
>
> > normal file I/O, or possibly grab an entire partition and use a custom
> > (huge block) file system if you really need to get close to the max
> > transfer rate of the drive.
>
> I can't resist pointing out that you DO NOT need a special FS
> to deliver performance equal to platter-level bandwidth.
> Ext2 routinely does so, for instance, with 4K blocks (BX, celeron, UDMA).

Sounds very good! :-) However, can this be kept up for, say 3 hours?
(Off course, this means that files will be reused or overwritten several
times, but that's irrelevant, as caching has no effect on this ammount
of data.) This is usually the hard part... The file system may NOT
decide to do some clean up work every now and then - we can't use THAT
big buffers.)

//David

> regards, mark hahn.
> --
> operator may differ from spokesperson. hahn@coffee.mcmaster.ca
> http://java.mcmaster.ca/~hahn
>
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