Re: do_gettimeofday vs. rdtsc in the scheduler

From: David S. Miller (
Date: Tue Sep 17 2002 - 18:32:46 EST

   From: john stultz <>
   Date: 17 Sep 2002 16:32:15 -0700
   Additionally, where is this system tick thing? You make it sound like
   its a register in the cpu, and while the Ultra-III may have one, I'm
   unaware of a system/bus tick register on intel chips. Is it in some
   semi-documented MSR?

It's in a register on Ultra-III. The whole point of this
conversation, if you read my initial postings, is that
"this should have been specified in the x86 architecture"

I know full well it isn't currently :-)
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