[Rd] LazyData: no / yes

Simon Urbanek simon.urbanek at r-project.org
Tue Nov 6 19:49:45 CET 2012


On Nov 6, 2012, at 1:03 PM, Christophe Genolini wrote:

> Hi the list
> 
> I have package foo0 with a big dataset 'myData'.
> In DESCRIPTION, if I use 'LazyData: no', then I get:
> 
> - when I open a R session : memory used=20 908
> - when I attach 'library(foo0)' : memory used=24364
> - then I load the set 'data(myData)' : memory used=39 668
> 
> If I use LazyData: yes', then I get
> - when I open a R session : memory used=20 908
> - when I attach 'library(foo0)' : memory used=52 760.
> 
> In this second example, after 'library(foo0)', I was expecting the memory to rize up to 39 668, not to 52 760... Where does the difference come from?
> 

What do you mean by "memory used" - i.e. where do you get that from? After GC?
This certainly doesn't look like a "big dataset" by the numbers - I would classify that as tiny :)

Cheers,
Simon


> Thanks
> Christophe
> 
> 
> -- 
> Christophe Genolini
> Maître de conférences en bio-statistique
> Vice président Communication interne et animation du campus
> Université Paris Ouest Nanterre La Défense
> 
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