Re: [PATCH] improved boot time TSC synchronization

David Mosberger
2003-01-16T17:45:43Z

>>>>> On Thu, 16 Jan 2003 11:44:55 -0500, Jim Houston <jim.houston@attbi.com> said:

Jim> The current TSC synchronization may have an error on the order
Jim> of 1 microsecond on a quad processor system. Not a big deal
Jim> but annoying if you are trying to figure out what order things
Jim> happen based on TSC time stamps.

Jim> Since the IA64 folk already solved this problem, I did a quick
Jim> hack based on the itc sync code.

Cool. I'm glad to see the code is proving useful on other architectures.
I was hoping that would be the case.

BTW: The algorithm is documented in Section 8.5.2 of my book (see
http://www.lia64.org/book/). If there is enough interested, I'd be
willing to try to talk the publisher into releasing that section as a
PDF (or perhaps HTML).

--david