Re: [LAU] reiser4.... has it a place for audio? - Linux-audio-user

13 Apr 2008

On Sun, 13 Apr 2008, Justin Smith wrote:

...
  On Sun, Apr 13, 2008 at 9:24 AM, Kjetil S. Matheussen
<
 k.s.matheussen(a)notam02.no&gt; wrote:

 "Lee Revell":
  On Fri, Apr 11, 2008 at 11:43 PM, naysayer
&lt;gateswideopen(a)gmail.com&gt;  wrote:
  > hi crew...
 >
 > i have just been looking at the benchmarking stats for reiser4 and it  looks
  > pretty cool. i was wondering if there is
there is any reason to  implement
  > this kind of file system in multimedia
environments. i current have my
 > root/system partition as reiserFS and my home partition as ext3. i  find this
  > to be quite efficient but perhaps if there
would be an improvement to
 > recording stability and speed, then perhaps it could work well with  apps
  > like ardour. although, reiser seems to be
happiest with small files,  reiser4
   claims to
be more efficient than ext3.... or that could be just spin.

 These days the choice of filesystem should make no significant
 difference.  Certainly it won't matter if an -rt kernel is used.

 Well, doesn't reiserfs use quite a lot more cpu than ext3? I think
 that may make a significant difference...
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 Reiserfs is optimized for smaller files (10 times as fast for files under 1k
 size, compared to ext3), and sluggish on huge files, so it would perform
 worse if you are mainly using large data  (multitracking, wavetable
 synthesis), and slightly better if you are mainly working with small data,
 or data created in ram at runtime (fm, am, algorithmic synthesis, real time
 sampling). For a multitract machine reiser would definitely not help, for a
 machine emulating a moog, or doing experimental realtime synthesis, it may
 be a small improvement.

That's already been said.  What I pointed out was that reiserfs uses more
cpu time than ext3, and for audio use, cpu usage may make a significant 
difference, while throughput, which you are talking about, probably 
don't.