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Hi! > > > > Comments? > > > > > > Yeah: "ouch" because I don't see a single category that's faster. > > > > HZ went to 1000, which should help multimedia latencies a lot. > > It shouldn't materially damage performance unless we have other things > extremely wrong. Its easy enough to verify by putting HZ back to 100 and > rebenching 1000 times per second, enter timer interrupt, acknowledge it, exit interrupt. Few i/o accessess, few tlb entries kicked out, some L1 cache consumed? Is 10usec per timer interrupt reasonable on modern system? That's 10 msec per second spend in timer with HZ=1000, thats 1% overall. So it seems to me it is possible for HZ=1000 to have performance impact... Pavel -- Worst form of spam? Adding advertisment signatures ala sourceforge.net. What goes next? Inserting advertisment *into* email? - 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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