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Re: Review: Concurrent Multi-File Data Streams

To: Ming Zhang <blackmagic02881@xxxxxxxxx>
Subject: Re: Review: Concurrent Multi-File Data Streams
From: David Chinner <dgc@xxxxxxx>
Date: Sun, 23 Sep 2007 17:45:00 +1000
Cc: David Chinner <dgc@xxxxxxx>, Leon Kolchinsky <leonk@xxxxxxxxxxxxxxxxxxxxx>, "'Hxsrmeng'" <hxsrmeng@xxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <1190399077.3795.86.camel@xxxxxxxxxxxxxxxxxxxxx>
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On Fri, Sep 21, 2007 at 02:24:37PM -0400, Ming Zhang wrote:
> On Fri, 2007-09-21 at 22:55 +1000, David Chinner wrote:
> > 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.
> 
> i did not see xfs_filestream.c in 2.6.22.6 yet. did i miss something
> here?

No, my mistake - it seems so long since I checked it in. it went
into 2.6.23-rc1....

Cheers,

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


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