This is what I have understood from following the TSC additions etc:
Every time a time type function is called from userspace (or in the
kernel) it has to either use the TSC, or go CPU to the 85xx (I think
that is the number anyway) and fetch the time. It was my understanding
that this was some ridiculously long period (for computers). I also
seem to remember David M. saying that the networking code does work a
bit faster with TSC. My non-perfect tests also would support that...
but that could also be caching issues since I do not have two identical
boards with one TSC usable chip (pre 2.1.127) and one not.
Again, I may be flawed, but that is what I understood.
Trever
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