Re: [Publicity] [blog DRAFT] How fast is Xen on ARM, really?

[Anil Madhavapeddy <anil@xxxxxxxxxx>]

On 23 May 2014, at 17:27, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> 
wrote:
> 
> 
>> The postgres benchmark left me wondering why x86 is so much faster -- is 
>> that because it just had a better disk?
> 
> I don't think that results such as 0.4% or 0.1% are very significant.
> As I wrote in the article, the overhead is so low in the disk benchmarks
> that they only manage to demonstrate that one needs a fast SSD to really
> show the virtualization overhead.

you should generally scale the Y axis so that the threshold of significance
is obvious to the reader.  In this case, it's at 0.8 (0.8 what? percent? 
relative to?)

If it's not a significant result, then also explain that somewhere in the text 
so the reader knows the implication.  But it's better to fix the graph itself 
so that it's self-evident...

-a


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