Guys,
In all kernels I have seen over the last several years the adjtime()
system call is implemented in the kernel/kern_clock.c kernel module.
There may be a library wrapper for it, but the actual adjustment is done
in the kernel at each timer interrupt.
Dave
Uwe Klein wrote:
Hal Murray wrote:
[100% overshoot]
I believe that Dave Mills has already explained that the problem is
due to changes in the adjtime() routine in both Sun Solaris and Unix.
This being the case, the choices would seem to be:
a. Live with it.
b. Get Sun and the Linux developers to back out the change to
adjtime() that broke ntpd.
c. Provide a custom adjtime() for each platform affected. I suspect
that the routine in question runs in kernel mode and may be part of
the kernel so that this may be easier said than done!
I assume the fix is something simple like replacing a select with
a simple assignment.
For Linux, it would help some of us if somebody would track down
the place that needs fixing and publish a diff. I took a quick
scan and didn't find it, but my kernel may be before somebody added
that tweak.
any specifics where to look?
the public visible adjtime(x) seems to live in glibc.
uwe
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