1*2b15cb3dSCy SchubertNotes on CPU clock oscillator tolerance with SunOS 4.1.1 and 4.1.3 2*2b15cb3dSCy Schubert 3*2b15cb3dSCy SchubertA bug in SunOS 4.1.1 results in the kernel time losing 1 microsecond 4*2b15cb3dSCy Schubertper tick of the system clock. The bug was fixed (bugid 1094383) for 5*2b15cb3dSCy SchubertSunOS 4.1.1 and corrected in SunOS 4.1.3. The easiest way to fix this 6*2b15cb3dSCy Schubertis to replace the 4.1.1 binary clock.o with the corresponding 4.1.3 7*2b15cb3dSCy Schubertbinary. Without this change it is necessary to use the tickadj program 8*2b15cb3dSCy Schubertincluded in this distribution with the -t 9999 option. 9*2b15cb3dSCy Schubert 10*2b15cb3dSCy SchubertThe tickadj option will work in all cases except when the kernel has 11*2b15cb3dSCy Schubertbeen modified to correct the CPU clock oscillator frequency using a 12*2b15cb3dSCy Schubert1-pps signal from a precision source. The bugfix must be installed for 13*2b15cb3dSCy Schubertthis wrinkle to work properly. 14*2b15cb3dSCy Schubert 15*2b15cb3dSCy SchubertDave Mills (mills@udel.edu) 16