Re: Cyclictest expected results

["Luis Claudio R. Goncalves" <lclaudio@uudg.org>]

On Mon, Oct 08, 2007 at 10:55:09AM -0400, Theodore Tso wrote:
| On Sun, Oct 07, 2007 at 06:20:29PM +0530, Jaswinder Singh wrote:
| > 
| > But I am not able to see performance difference in my GNOME
| > Environment. It is still very very slow, how can I boost X-Windows by
| > -rt patch.
| 
| There are many reasons why GNOME performance might be slow.  Stupid
| application design going to helped by some magic kernel patch.  Keep
| in mind the GNOME doesn't run with real-time priority levels; neither
| does the X server.  
| 
| The -rt patch isn't magic; no RTOS is magic.  A large amount of
| application design and reworking in order to properly utilize the
| POSIX real-time interfaces.

Also keep in mind that by its very nature, -rt is more sensible to bad
coding and bad application design. Some applications that perform well in
mainstream linux may present bugs in -rt (those bugs exist in the code but
are more prone to show uo in -rt).

People here have been working most of time focused on determinism.
Eventually it comes with a performance enhancement bonus. Sometimes not.

Luis
-- 
[ Luis Claudio R. Goncalves                    Bass - Gospel - RT ]
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