Re: Review: Concurrent Multi-File Data Streams

David Chinner
2007-09-21T12:55:57Z

On Fri, Sep 21, 2007 at 11:13:33AM +0200, Leon Kolchinsky wrote:
> I'm running DSS (Darwin Streaming Server) on one of my servers and that
> "Concurrent Multi-File Data Streams" thing seems very interesting :)

Filestreams is needed to optimise concurrent *ingest* of data,
not playout.

i.e. if you are ingesting multiple real-time streams of data at the
same time as you are playing out real-time streams and you area
missing playout deadlines (i.e. dropping frames) due to sub-optimal
data layout, then it might help you.....

> I have a separate partition there I store all movies.
> Is 2.6.22 kernel already has this patch incorporated already(actually
> gentoo-sources-2.6.22-r5)?

It went into .22 so you should have it.

> Are there any special mkfs.xfs or mount options I should make to make this
> thing work or make the FS to be optimized for streaming?

The allocator behaviour is changed by the mount option "-o filestreams".

Cheers,

Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group