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SubjectRe: [RFC][PATCH] HZ as a config option
Alan Cox wrote:
> On Fri, 2002-10-04 at 23:53, Dave Hansen wrote:
>
>>On large systems (like NUMA-Q, Intel Profusion, etc...), latency and
>>user responsiveness become much less important. The extra scheduling
>>overhead caused by higher HZ is bad.
>>
>>This is x86-only right now. Is there any wider desire to tune this at
>>config time? Do any architecutures have strict rules as to what this
>>can be set to?
>
> You can't set this arbitarily, the NTP PLL's will only lock for certain
> value ranges.

Where can I find these ranges? include/linux/timex.h only errors if
the number is out of the 12-1535 range.

--
Dave Hansen
haveblue@us.ibm.com

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