testsuite/user/preempt problem?

[Paolo Mantegazza]

Thinus Viljoen wrote:
> Trying again, doesn't look like the first one went through...
> 
>  -----Original Message-----
> *From:  * Thinus Viljoen 
> *Sent:  * 30 August 2006 15:28
> *To:    * 'rtai at rtai.org'
> *Subject:       * testsuite/user/preempt problem?
> 
> Good day
> 
> After installing RTAI, all of the testsuite apps looks OK, except the 
> user/preempt test. I get the following output:
> 
> // Start of output
> [root at rws6 preempt]# ./run
> *
> *
> * Type ^C to stop this application.
> *
> *
> RTAI Testsuite - LXRT preempt (all data in nanoseconds)
> RTH|     lat min|     lat avg|     lat max|    jit fast|    jit slow
> RTD|  1000000000|     2565841|  2005107894|           0|           0
> RTD|  1000000000|     2566262|  2005107894|           0|           0
> RTD|  1000000000|     2566564|  2005107894|           0|           0
> RTD|  1000000000|     2565947|  2005107978|           0|           0
> RTD|  1000000000|     2565989|  2005107978|           0|           0
> RTD|  1000000000|     2565957|  2005110303|           0|           0
> RTD|  1000000000|     2565963|  2005111438|           0|           0
> RTD|  1000000000|     2565903|  2005111438|           0|           0
> RTD|  1000000000|     2566000|  2005111438|           0|           0
> // Stop of output
> 
> These funny values continues until I stop the test. What is wrong?
> 

Do fancy value appear for kern/preempt also? The latency test is OK even 
when run for long times under load both in kernel/user mode?

Paolo.


> My system specs are as follows:
> - Intel(R) Pentium(R) 4 CPU 1.50GHz
> - Host bridge: Intel Corporation 82845 845 (Brookdale) Chipset Host 
> Bridge (rev 03)
> - Fedora Core 5
> - kernel 2.6.15.1
> - RTAI 3.3-cv
> 
> Thanks
> Thinus Viljoen
> 
> Electronic Engineer
> Aerospace Systems, a division of Denel
> http://www.kentron.co.za
> 
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