From zeileis@ci.tuwien.ac.at  Fri Oct 11 19:30:00 2002
From: zeileis@ci.tuwien.ac.at (Achim Zeileis)
Date: Fri, 11 Oct 2002 20:30:00 +0200
Subject: growing process size in simulation
Message-ID: <3DA718A8.79391A9E@ci.tuwien.ac.at>

I came across this in a simulation I ran under 1.6.0: If I do something
like

R> x <- rnorm(10)
R> rval <- NULL
R> for(i in 1:100000) rval <- t.test(x)$p.value

then the process size remains at about 14M under 1.5.1, but it seems to
be almost linearly growing up to more than 100M under 1.6.0.

I know that the above simulation is nonsense, but it was the simplest I
could come up with to reproduce the behaviour. It doesn't depend on
t.test, if I use wilcox.test(x)$p.value the same happens...

I could reproduce this behaviour under Linux and Solaris, the exact
versions are given below.
Z

---
the problem exists on

platform i686-pc-linux-gnu
arch     i686             
os       linux-gnu        
system   i686, linux-gnu  
status                    
major    1                
minor    6.0              
year     2002             
month    10               
day      01               
language R                

and

platform sparc-sun-solaris2.7
arch     sparc               
os       solaris2.7          
system   sparc, solaris2.7   
status                       
major    1                   
minor    6.0                 
year     2002                
month    10                  
day      01                  
language R                   

but not on

platform i386-pc-linux-gnu
arch     i386             
os       linux-gnu        
system   i386, linux-gnu  
status                    
major    1                
minor    5.1              
year     2002             
month    06               
day      17               
language R
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growing process size in simulation
Achim Zeileis