Re: [Xenomai] ToD drift on i7-3740QM

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On Sun, Jan 25, 2015 at 12:15:39PM +0100, Roland Pastorino wrote:
> Good morning everyone,
> 
> I would like to know if some of you could give me a hint on how to
> solve my ToD drift problem.
> This question is similar to this one ->
> http://comments.gmane.org/gmane.linux.real-time.xenomai.users/19719
> 
> Problem:
> After installing Xenomai and after the first reboot, my ToD drift was
> around 500000 us/s.
> After the second reboot, my ToD drift is around 500 us/s which I
> presume is still too high.
> I checked the troubleshooting information on Xenomai website but it didn't help.
> 
> Machine and configuration:
> - PC = Thinkpad w530
> - cpu = i7-3740QM
> - kernel configuration file is attached. I followed the Xenomai
> website for the configuration.
> - cobalt kernel of Xenomai 3
> - Linux kernel 3.16
> - ipipe-core-3.16-x86-1.patch
> - Ubuntu 14.10

Actually, the kernel configuration is not attached. But probably the
only interesting item is whether CONFIG_CPU_FREQ is missing.


-- 
					    Gilles.