R object size dump.

showObjectsSize shows how much memory do objects in specific environment(s) occupy. It builds upon object.size and gathers information about the size and mode of objects in specific environment(s). It supports environment name filtering using regular expressions, object mode filtering, as well as filtering by size.

showObjectsSize(mode = NULL, n = 20, env = parent.frame(), recursive = FALSE,
    envNameRegexpr = NULL, all.names = TRUE, sizeUnits = 1024 *
        1024, verbose = FALSE)

Arguments

mode	mode of objects to show (see 'mode'), use codeNULL to show objects of all modes.
n	number of objects to show (the first n biggest objects will be shown).
env	environment to operate in.
recursive	shall we iteratively look in parent environments?
envNameRegexpr	regular expression character filter applied to the names of environments. If not NULL, only environments matched by envNameRegexpr are considered.
all.names	if TRUE, all object names are returned. If FALSE, names which begin with a '.' are omitted.
sizeUnits	the units of size (defaults to 1MB)
verbose	if TRUE, progress is reported.

Details

Partially based on http://jeromyanglim.blogspot.cz/2009/11/memory-management-in-r-few-tips-and.html.

Value

A data frame of columns name, size, mode, and env. In addition, the total size of all objects found is put into the totalSize attribute of the data frame.

See also

object.size, ls, mode

Examples

showObjectsSize(n=20)
#> [1] name  size  type  mode  class rows  cols  env  
#> <0 rows> (or 0-length row.names)

if (require('MASS')) {
  showObjectsSize(mode = 'numeric', envNameRegexpr = glob2rx('package:MASS'), rec = TRUE)
}
#>          name         size   type    mode   class rows cols          env
#> 18      SP500 0.0212554932 double numeric numeric 2780   NA package:MASS
#> 59    drivers 0.0019073486 double numeric      ts  192   NA package:MASS
#> 28  accdeaths 0.0009918213 double numeric      ts   72   NA package:MASS
#> 56     deaths 0.0009918213 double numeric      ts   72   NA package:MASS
#> 72   galaxies 0.0006713867 double numeric numeric   82   NA package:MASS
#> 119   newcomb 0.0005493164 double numeric numeric   66   NA package:MASS
#> 27      abbey 0.0002822876 double numeric numeric   31   NA package:MASS
#> 45       chem 0.0002288818 double numeric numeric   24   NA package:MASS
#> 145    shrimp 0.0001831055 double numeric numeric   18   NA package:MASS
#> 7         DDT 0.0001678467 double numeric numeric   15   NA package:MASS