Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: Missed jiffies | Date | 17 Feb 2002 14:48:18 -0800 |
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Followup to: <3C6E833F.1A888B3C@mvista.com> By author: george anzinger <george@mvista.com> In newsgroup: linux.dev.kernel > > One of the nasty problems, especially with machines such as yours (i.e. > lap tops), is the fact that TSC is NOT clocked at a fixed rate. It is > affected by throttling (reduced in 12.5% increments) and by power > management.
If the TSC is affected by HLT, throttling, or C2 power management, the TSC is broken (as it is on Cyrix chips, for example.) The TSC usually *is* affected by C3 power management, but the OS should be aware of C3.
-hpa -- <hpa@transmeta.com> at work, <hpa@zytor.com> in private! "Unix gives you enough rope to shoot yourself in the foot." http://www.zytor.com/~hpa/puzzle.txt <amsp@zytor.com> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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