From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Fri, 21 Sep 2007 05:55:57 -0700 (PDT) Received: from larry.melbourne.sgi.com (larry.melbourne.sgi.com [134.14.52.130]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with SMTP id l8LCtlgf001727 for ; Fri, 21 Sep 2007 05:55:50 -0700 Date: Fri, 21 Sep 2007 22:55:31 +1000 From: David Chinner Subject: Re: Review: Concurrent Multi-File Data Streams Message-ID: <20070921125531.GM995458@sgi.com> References: <12789210.post@talk.nabble.com> <20070921091441.3ABB88E0B@mail.edu.haifa.ac.il> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070921091441.3ABB88E0B@mail.edu.haifa.ac.il> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: Leon Kolchinsky Cc: 'Hxsrmeng' , xfs@oss.sgi.com 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