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john stultz wrote: > On Wed, 2006-11-29 at 16:56 -0800, Linda Walsh wrote: > >> I recently noticed this message in my bootup that I don't remember >> from before: >> >> PCI: Probing PCI hardware (bus 00) >> * Found PM-Timer Bug on the chipset. Due to workarounds for a bug, >> * this clock source is slow. Consider trying other clock sources >> > > This basically means that your chipset has a bug which requires the ACPI > PM timer to be read three times in order to get a valid reading. > > This will cause gettimeofday/clock_gettime to take longer to execute, > which is what is meant by "slow" (rather then the counter's frequency > being incorrect). > > >> How would this affect my clock? It says to try another >> clock source, what type of clock source would it be suggesting I >> use? Another chip already in the computer? Yes. >> It is an Intel 440BX >> chipset; on an Dell motherboard. Would that be likely to have >> another chip source that is compensating? >> You can change the clock source using "clock=" kernel parameter. Please refer to Documentation/kernel-parameters.txt file of kernel source. >> I don't notice a significant clock slowdown, but I'm running NTP, >> so that could be masking the problem. >> > > Unless you're running performance critical programs that utilize > gettimeofday/clock_gettime, you probably won't notice anything. Time > should still function properly. If you are having performance issues, > you can try using a different clocksource (the TSC is probably safe, but > not necessarily). > > thanks > -john > > > > - > 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/ > > Thanks Srinivasa DS - 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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