Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: 2.2.0pre1 OOPS on boot. | Date | 31 Dec 1998 07:19:48 GMT |
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Followup to: <Pine.LNX.3.95.981230105754.6194F-100000@penguin.transmeta.com> By author: Linus Torvalds <torvalds@transmeta.com> In newsgroup: linux.dev.kernel > > The "rdtsc" thing _is_ needed even for UP systems. > > Look at the code generated for do_gettimeofday() some time - it's a > worthwhile optimization to do statically. > > (And if you wonder why I care about gettimeofday(), just look at the > system call distribution for a lot of programs, including most X > programs). > > As I mentioned in my email, it may be a valid thing to expand the choices > a bit (ie add a choice between i486 and i586), but the static "rdtsc" > thing definitely stays. >
Not only that, but it is friggin' vital for a time server.
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