[PLUG] high speed filesystems

Brian Beattie beattie at beattie-home.net
Fri Oct 10 13:36:03 UTC 2003


On Fri, 2003-10-10 at 15:57, Kyle Hayes wrote:
> On Friday 10 October 2003 12:08, Brian Beattie wrote:
> > I'm investigating options for very high speed data logging.  I'm
> > wondering if anybody knows of any work on filesystems in this area.
> 
> Hmm, XFS is supposed to deal with large multimedia data well.  That seems like 
> a close match.  I.e. it will stream it continuously and at high rates (I 
> assume both reading and writing) very nicely.   I haven't used it, but I've 
> read this in the XFS papers and seen it posted in other venues.
> 
> If you want really high speed, do you need a filesystem?  I.e. could you just 
> blast it to a raw partition in block-sized chunks?  You'd need a partition 
> (or at least a block device) per log "file".  Sounds like a lot more work, 
> but the speed can't be beat.

Yeah, I do need a filesystem, and I need to avoid the block device
(whose braindead idea was it to break all I/O up into blocks, and not
give me a way to avoid it? :) )

> 
> Best,
> Kyle
> 
> 
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-- 
Brian Beattie            | Experienced kernel hacker/embedded systems
beattie at beattie-home.net | programmer, direct or contract, short or
www.beattie-home.net     | long term, available immediately.

"Honor isn't about making the right choices.
It's about dealing with the consequences." -- Midori Koto





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