Re: [PATCH] i386: Selectable Frequency of the Timer Interrupt

[Martin J. Bligh]

--On Friday, July 08, 2005 16:03:03 -0700 Chris Wedgwood <cw@xxxxxxxx> wrote:

> On Fri, Jul 08, 2005 at 03:59:35PM -0700, Martin J. Bligh wrote:
> 
>> I think we're talking between 2.6.12-git5 and 2.6.12-git6 right? I
>> can confirm more explicitly if really need be. 48s -> 45.5s elapsed.
> 
> That's a huge difference (5%) --- what hardware is that on?

16 CPU x440 (about a 2-3 year old NUMA box). flat 4x seems about a 1% 
gain, still statistically significant, but definitely smaller.

I'm not saying there isn't data supporting higher HZ ... I just haven't
seen it published. I get the feeling what people really want is high-res
timers anyway ... high HZ is just concealing the issue and making it
slightly less crap, not actually fixing it.

M.

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