In message <40EEC665.5010608_at_mac.com>, Chuck Swiger writes: >Chris Stenton wrote: >> Any reason why the default value for HZ is still set at 100? > >Sure. Timer interrupts and context switching aren't free, you know: the >faster the HZ, the more time the system spends on overhead rather than doing >useful work. > >> Would not 1000 be better for finer granularity? > >Certainly it would, but tradeoffs exist.... Most of my systems run with HZ=1000 already, but that is hardly ground for changes to the default. What we need is some pro et contra arguments, including benchmarks. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk_at_FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.Received on Fri Jul 09 2004 - 14:26:58 UTC
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