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On Friday 28 October 2005 00:18, Claudio Scordino wrote: > Hi, > > during the last years there has been a lot of discussion about the > "best" value of HZ... On i386 was 100, then became 1000, and finally was > set to 250. I'm thinking to do an evaluation of this parameter using > different architectures. > > Has anybody thought to give the possibility to modify the value of HZ at > boot time instead of at compile time ? This would allow to easily test > different values on different machines and create a table containing the > "best" value for each architecture... At this moment, instead, we have to > recompile the kernel for each different value :( > > Do you think there would be much work to do that ? > Do you think it would be a desired feature the knowledge of the best value > for each architecture with more precision ? Google for "dynticks". There's obviously an overhead associated with HZ not being a constant (the compiler cannot optimise many expressions), but the feature is being worked on nonetheless. -- Cheers, Alistair. 'No sense being pessimistic, it probably wouldn't work anyway.' Third year Computer Science undergraduate. 1F2 55 South Clerk Street, Edinburgh, UK. - 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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