1258945SrobertoNotes on CPU clock oscillator tolerance with SunOS 4.1.1 and 4.1.3 2258945Sroberto 3258945SrobertoA bug in SunOS 4.1.1 results in the kernel time losing 1 microsecond 4258945Srobertoper tick of the system clock. The bug was fixed (bugid 1094383) for 5258945SrobertoSunOS 4.1.1 and corrected in SunOS 4.1.3. The easiest way to fix this 6258945Srobertois to replace the 4.1.1 binary clock.o with the corresponding 4.1.3 7258945Srobertobinary. Without this change it is necessary to use the tickadj program 8258945Srobertoincluded in this distribution with the -t 9999 option. 9258945Sroberto 10258945SrobertoThe tickadj option will work in all cases except when the kernel has 11258945Srobertobeen modified to correct the CPU clock oscillator frequency using a 12258945Sroberto1-pps signal from a precision source. The bugfix must be installed for 13258945Srobertothis wrinkle to work properly. 14258945Sroberto 15258945SrobertoDave Mills (mills@udel.edu) 16