R: Report the Space Allocated for an Object

object.size {base} | R Documentation

## Report the Space Allocated for an Object

### Description

Provides an estimate of the memory that is being used to store an R object.

### Usage

    object.size(x)

### Arguments

`x` | An R object.

### Details

Exactly which parts of the memory allocation should be attributed to which object is not clear-cut. This function merely provides a rough indication. For example, it will not detect if character storage for character strings are shared between identical elements (which it will be if `rep` was used, for example).

The calculation is of the size of the object, and excludes the space needed to store its name in the symbol table.

### Value

An estimate of the memory allocation attributable to the object, in bytes.

### Examples

    object.size(letters)
    object.size(ls)
    ## find the 10 largest objects in base
    z <- sapply(ls("package:base"), function(x) object.size(get(x)))
    as.matrix(rev(sort(z))[1:10])

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