Displaying 3 results from an estimated 3 matches for "cells_".
Did you mean:
cells
2017 May 18
1
Interpreting R memory profiling statistics from Rprof() and gc()
...R heap
- vector memory in large blocks (from malloc)
- memory in nodes on the R heap
- number of calls to the internal function duplicate in the time interval
(*Q1:* Are the units of the first 3 stats in bytes?)
and from the gc() documentation, the two rows represent
- ?"Ncells"? (_cons cells_), usually 28 bytes each on 32-bit systems and 56
bytes on 64-bit systems,
- ?"Vcells"? (_vector cells_, 8 bytes each)
(*Q2:* how are Ncells and Vcells related to small heap/large heap/memory in
nodes?)
And I guess the question that lead to these other questions is - *Q3:* I'd
like to...
2011 Nov 13
1
Understand Ncells and Vcells, from gc()
...tten in
help(gc))
And in my mind, 1 unit of Ncells should be 20 bytes, so that:
1 unit of Vcells + 2 units of Ncells = 8 + 2*20 = 48, the size of x as
returned by the command object.size(x).
BUT, when you look at help(gc), one can read:
?gc? returns a matrix with rows ?"Ncells"? (_cons cells_), usually
28 bytes each on 32-bit systems and 56 bytes on 64-bit systems,
So, can you please help me to undertsand all of this?
Thanks in advance.
Best regards,
Pierre
--
Pierre Lafaye de Micheaux
Adresse courrier:
D?partement de Math?matiques et Statistique
Universit? de Montr?al
CP 6128, s...
2011 Nov 13
1
To moderator
...at:
>> 1 unit of Vcells + 2 units of Ncells = 8 + 2*20 = 48, the size of
>> x as
>> returned by the command object.size(x).
>>
>> BUT, when you look at help(gc), one can read:
>> ?gc? returns a matrix with rows ?"Ncells"? (_cons cells_),
>> usually
>> 28 bytes each on 32-bit systems and 56 bytes on 64-bit systems,
>>
>> So, can you please help me to undertsand all of this?
>>
>> Thanks in advance.
>>
>> Best regards,
>>
>> Pierre
>>
&g...