18 lines
740 B
Plaintext
18 lines
740 B
Plaintext
Notes on CPU clock oscillator tolerance with SunOS 4.1.1 and 4.1.3
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A bug in SunOS 4.1.1 results in the kernel time losing 1 microsecond
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per tick of the system clock. The bug was fixed (bugid 1094383) for
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SunOS 4.1.1 and corrected in SunOS 4.1.3. The easiest way to fix this
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is to replace the 4.1.1 binary clock.o with the corresponding 4.1.3
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binary. Without this change it is necessary to use the tickadj program
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included in this distribution with the -t 9999 option.
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The tickadj option will work in all cases except when the kernel has
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been modified to correct the CPU clock oscillator frequency using a
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1-pps signal from a precision source. The bugfix must be installed for
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this wrinkle to work properly.
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Dave Mills (mills@udle.edu)
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