by Ulrich Windl[permalink] [raw]
Hello, a notifier:
For debugging purposes I added a print statement to show lost ticks
in the i386 kernel. On my Pentium 100 even for very light load the
kernel declares having lost 2 ticks.
I don't know why this happend, but I see a problem: If the kernel
looses 2 ticks on a light load, it might loose more ticks on heavy
load. Unfortunately the non-TSC version of the timeoffset routine
(using the timer chip's register) can only span one tick, possibly
guessing that there's more than one, but not more.
Therefore losing over 1 tick might cause a bad time.
I have no idea how to find the parts that disable interrupts for that