2.4.26 and MPC885 context switching time

Andrew Williams awilliam at nortel.com
Thu Jun 16 03:04:27 EST 2005


Question embedded below..

> -----Original Message-----
> From: linuxppc-embedded-bounces at ozlabs.org 
> [mailto:linuxppc-embedded-bounces at ozlabs.org] On Behalf Of 
> Martin Krause
> Sent: June 15, 2005 11:12 AM
> To: Schaefer-Hutter, Peter
> Cc: linuxppc-embedded at ozlabs.org
> Subject: AW: 2.4.26 and MPC885 context switching time
> 
> 
> 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.
>

Has anything changed with 2.6 in the last 12 months that 
would alter the conclusions presented in this article?

A.

 
> Regards,
> Martin
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> Linuxppc-embedded at ozlabs.org 
> https://ozlabs.org/mailman/listinfo/linuxppc-> embedded
> 
> 
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