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Re: PAE and balloon benchmarks
On Sun Jul 11 2010 at 01:44:51 +0200, Jean-Yves Migeon wrote:
> Hi lists,
> FWIW, I just uploaded a wiki page for my results regarding PAE
> benchmarks .
> In short:
> - expect 10-20% overhead in specific benchmarks for PAE; nothing new
> here, there have been critics on PAE performance loss multiple times.
Thanks for taking the time to throughly benchmark this.
A remarks/questions out of pure interest:
* Is the cost expected? Naiively thinking, 15-20% seems quite high.
How much do other systems pay for PAE? Did you attempt to pinpoint
where extra time is spent?
* How jittery were the results? I'd be careful to not dismiss performance
degradation of several % as "noise" without just cause. Those percent
might be important to someone!
* Did you do any hot cache build.sh testing? IMHO that is at least as
interesting, if not more interesting, than the coldstart one.
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