Re: [Xenomai-help] IRQ-Latency when in idle State on ARM

["Karl Tyss" <tyss.k@domain.hid>]

Hi Bosko,

'nohlt' works. The problem with disabling cache in idle mode is gone
when using 'nohlt' option.

Thanks,
Karl Tyss 
 

Mit Freundlichen Grüßen,
Karl Tyss



>>> Bosko Radivojevic <bosko.radivojevic@domain.hid> 06/05/09 2:13 PM
>>> 
Karl,

you can try to boot the kernel with 'nohlt' option.

I had a similar problem - like CPU wasn't running on the same clock
rate. My ISR had two different duration times ~500 and ~800 us, always
with the same code execution path.

The similar behavior I couldn't detect on the vanilla kernel.

Thanks to Gilles, 'nohlt' kernel option helped.

Sincerely,
Bosko



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