1181834SrobertoNotes on CPU clock oscillator tolerance with SunOS 4.1.1 and 4.1.3 2181834Sroberto 3181834SrobertoA bug in SunOS 4.1.1 results in the kernel time losing 1 microsecond 4181834Srobertoper tick of the system clock. The bug was fixed (bugid 1094383) for 5181834SrobertoSunOS 4.1.1 and corrected in SunOS 4.1.3. The easiest way to fix this 6181834Srobertois to replace the 4.1.1 binary clock.o with the corresponding 4.1.3 7181834Srobertobinary. Without this change it is necessary to use the tickadj program 8181834Srobertoincluded in this distribution with the -t 9999 option. 9181834Sroberto 10181834SrobertoThe tickadj option will work in all cases except when the kernel has 11181834Srobertobeen modified to correct the CPU clock oscillator frequency using a 12181834Sroberto1-pps signal from a precision source. The bugfix must be installed for 13181834Srobertothis wrinkle to work properly. 14181834Sroberto 15181834SrobertoDave Mills (mills@udel.edu) 16