R devel - May 2011 - RProfmem output format

Hi all,

When I run the example in RProfmem, I get:


     Rprofmem("Rprofmem.out", threshold=1000)
     example(glm)
     Rprofmem(NULL)
     noquote(readLines("Rprofmem.out", n=5))

...

[1] 1384 :5416 :5416 :1064 :1064 :"readRDS" "index.search"
"example"
[2] 1064 :"readRDS" "index.search" "example"
[3] 4712 :"readRDS" "index.search" "example"
[4] 4712 :"readRDS" "index.search" "example"
[5] 1064 :"readRDS" "index.search" "example"

What do 5 the numbers in the first line mean?

In the subsequence lines I'm assuming the structure is bytes allocated :
call.

Hadley


-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/

On Sat, May 14, 2011 at 5:00 AM, Hadley Wickham <hadley at rice.edu>
wrote:
> Hi all,
>
> When I run the example in RProfmem, I get:
>
>
> ? ? Rprofmem("Rprofmem.out", threshold=1000)
> ? ? example(glm)
> ? ? Rprofmem(NULL)
> ? ? noquote(readLines("Rprofmem.out", n=5))
>
> ...
>
> [1] 1384 :5416 :5416 :1064 :1064 :"readRDS"
"index.search" "example"
> [2] 1064 :"readRDS" "index.search" "example"
> [3] 4712 :"readRDS" "index.search" "example"
> [4] 4712 :"readRDS" "index.search" "example"
> [5] 1064 :"readRDS" "index.search" "example"
>
> What do 5 the numbers in the first line mean?
>
> In the subsequence lines I'm assuming the structure is bytes allocated
: call.
I think the five numbers come from four memory allocations before
example() is called.  Looking at the code in src/main/memory.c, it
prints newline only when the call stack is not empty.

I don't see why this is done, and I may well be the person who did it
(I don't have svn on this computer to check), but it is clearly
deliberate.

   -thomas

-- 
Thomas Lumley
Professor of Biostatistics
University of Auckland