1*abb0f93cSkardelNotes on CPU clock oscillator tolerance with SunOS 4.1.1 and 4.1.3 2*abb0f93cSkardel 3*abb0f93cSkardelA bug in SunOS 4.1.1 results in the kernel time losing 1 microsecond 4*abb0f93cSkardelper tick of the system clock. The bug was fixed (bugid 1094383) for 5*abb0f93cSkardelSunOS 4.1.1 and corrected in SunOS 4.1.3. The easiest way to fix this 6*abb0f93cSkardelis to replace the 4.1.1 binary clock.o with the corresponding 4.1.3 7*abb0f93cSkardelbinary. Without this change it is necessary to use the tickadj program 8*abb0f93cSkardelincluded in this distribution with the -t 9999 option. 9*abb0f93cSkardel 10*abb0f93cSkardelThe tickadj option will work in all cases except when the kernel has 11*abb0f93cSkardelbeen modified to correct the CPU clock oscillator frequency using a 12*abb0f93cSkardel1-pps signal from a precision source. The bugfix must be installed for 13*abb0f93cSkardelthis wrinkle to work properly. 14*abb0f93cSkardel 15*abb0f93cSkardelDave Mills (mills@udel.edu) 16