Re: HZ, preferably as small as possible

J.A. Magallon
2002-07-10T23:47:45Z

On 2002.07.11 Thunder from the hill wrote:
>Hi,
>
>On Wed, 10 Jul 2002, Andrew Morton wrote:
>> That makes a ton of sense.
>>
>> > But on the other hand, increasing HZ has perf/latency benefits, yes? Have
>> > these been quantified?
>>
>> Not that I'm aware of. And I'd regard any such claims with some
>> scepticism.
>>
>> > I'd either like to see a HZ that has balanced
>> > power/performance, or could we perhaps detect we are on a system that cares
>> > about power (aka a laptop) and tweak its value at runtime?
>
>Want a config option? Either int or bool (CONFIG_LOW_HZ). It's not too
>much effort.
>

How about a <boot> option ? linux hz=[low,high]

It is runtime, but just one time.

--
J.A. Magallon \ Software is like sex: It's better when it's free
mailto:jamagallon@able.es \ -- Linus Torvalds, FSF T-shirt
Linux werewolf 2.4.19-rc1-jam2, Mandrake Linux 8.3 (Cooker) for i586
gcc (GCC) 3.1.1 (Mandrake Linux 8.3 3.1.1-0.7mdk)