[Rd] memory footprint of readRDS()

Joris Meys jori@mey@ @ending from gm@il@com
Tue Sep 18 17:28:11 CEST 2018

Dear all,

I tried to read in a 3.8Gb RDS file on a computer with 16Gb available
memory. To my astonishment, the memory footprint of R rises quickly to over
13Gb and the attempt ends with an error that says "cannot allocate vector
of size 5.8Gb".

I would expect that 3 times the memory would be enough to read in that
file, but apparently I was wrong. I checked the memory.limit() and that one
gave me a value of more than 13Gb. So I wondered if this was to be
expected, or if there could be an underlying reason why this file doesn't
want to open.

Thank you in advance

Joris Meys
Statistical consultant

Department of Data Analysis and Mathematical Modelling
Ghent University
Coupure Links 653, B-9000 Gent (Belgium)

Biowiskundedagen 2017-2018

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