[LinuxPPS] RT vs process sched tuning?

Bernhard Schiffner bernhard at schiffner-limbach.de
Wed Apr 15 08:52:16 CEST 2009


On Wednesday 15 April 2009 04:16:10 Steve Logue wrote:
> Hi,
> 
> Has anyone with a working RT kernel compared the performance of the RT
> patched vs. running ntpd in an elevated scheduling class/priority?
> 
> Eg:  sudo chrt -f 99 /usr/local/bin/ntpd -c /etc/ntp.conf
> 
> Wouldn't this accomplish nearly the same consistency?
> 
> -STEVEl
> 
No, I don't have by hand.

Nevertheless I don't expect to see any difference regarding PPS.
PPS is in the kernel. So tuning NTPD may improve some behavior of ntpd,
but not the "database".

Bernhard



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