CODEWITHSUNDEEP
julia
Michael Ohlrogge
Michael Ohlrogge

Reputation: 10990

Find size of single object in memory

I know that the varinfo() function will give the size of all objects in memory. This can be quite slow to execute, and will at times fail on certain objects, making the whole function hang. Is there a way to get the size in memory of a specific object, similar to the sys.getsizeof() function in Python?

Upvotes: 22

Views: 12517

Answers (2)

amrods
amrods

Reputation: 2131

varinfo() accepts regular expressions to match object names, so you can use something like

x = rand(100, 100)
varinfo(r"x")

to get info on x. For the size in bytes use

Base.summarysize(x)

EDIT: Originally this answer recommended whos(), however as @Plankalkül mentions whos() has been renamed to varinfo(), the answer was updated accordingly.

Upvotes: 38

HarmonicaMuse
HarmonicaMuse

Reputation: 7893

You can use the sizeof function:

help?> sizeof
search: sizeof

  sizeof(s::AbstractString)

  The number of bytes in string s.

  sizeof(T)

  Size, in bytes, of the canonical binary representation of the given DataType T, if any.

julia> x = rand(100, 100);

julia> sizeof(x)
80000

Upvotes: 9

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