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On Thu, 10 Jan 2002, Alan Cox wrote: > The fun below 1mS comes from > > 1. APM bios calls where the bios decides to take >1mS to have > a chat with your batteries > 2. Video cards pulling borderline legal PCI tricks to get > better benchmarketing by stalling the entire bus Don't forget the embedded space, where the hardware vendor can ensure that their hardware is well-behaved. Even on a PC, it is possible for someone who cares about realtime to spec a reasonable system. On good hardware, we can easily do much better than 1ms latency with a preemptible kernel and a spinlock cleanup. I don't think the limitations of some PC hardware should limit our goals for Linux. Nigel Gamble nigel@nrg.org Mountain View, CA, USA. http://www.nrg.org/ - 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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