iPhone vs Android

[Andrei Alexandrescu via Digitalmars-d]

On 9/13/16 11:58 AM, Kagamin wrote:
> On Tuesday, 13 September 2016 at 10:04:43 UTC, Andrei Alexandrescu wrote:
>> Do you have a citation? The number I know is 3x from Emery Berger's
>> (old) work. -- Andrei
>
> http://sealedabstract.com/rants/why-mobile-web-apps-are-slow/

This suggests the ratio is 4x not 2x:

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What this chart says is “As long as you have about 6 times as much 
memory as you really need, you’re fine.  But woe betide you if you have 
less than 4x the required memory.”
====

> http://www-cs.canisius.edu/~hertzm/gcmalloc-oopsla-2005.pdf
> Probably these.

This is Berger's paper I was referring to. It concludes the ratio is 3x 
not 2x:

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With only three times as much memory, the collector runs on average 17% 
slower than explicit memory management. However, with only twice as much 
memory, garbage collection degrades performance by nearly 70%.
====

So do you agree you were wrong in positing 2x as the rule of thumb?


Andrei