AW: 2.4.26 and MPC885 context switching time

Martin Krause Martin.Krause at tqs.de
Thu Jun 16 01:12:14 EST 2005


Hi Peter,

linuxppc-embedded-bounces at ozlabs.org wrote on :
> i'm evaluating IPC on the MPC885ADS and discovered
> that the context switching times seem to be quite
> disappointing (up to 1ms). As we need to do a lot
.. 
> Or is this the expected context switching time for
> CPU @ 100 MHz (RAM @ 50 MHz)? Suggestions for a
> benchmark program?

Denx has done some detailed performance measurements 
(including context switching). You could find the report 
here: http://www.denx.de/twiki/bin/view/Know/Linux24vs26.
Hope that is of some help.

Regards,
Martin



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