[OpenAFS] Streaming windows media?

Jeffrey Altman jaltman@secure-endpoints.com
Fri, 30 Mar 2007 00:17:46 -0400

Jeffrey Hutzelman wrote:
> In addition, AFS does not do any sort of
> automatic read-ahead, so cold-cache reads will be rather bursty,
> requiring more pre-buffering and/or extra effort to achieve a continuous
> transfer.

The Windows client implements a pre-fetch algorithm that is hinted based
upon the Windows CreateFile() flags indicating whether the usage model
is sequential or random access usage.  If no hint is provided, the
client will always queue a pre-fetch of the next chunk beyond the one
that was requested if it is not already present in the cache.

Jeffrey Altman