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2010 Jan 19
2
Memory usage in read.csv()
I'm sure this has gotten some attention before, but I have two CSV
files generated from vmstat and free that are roughly 6-8 Mb (about
80,000 lines) each. When I try to use read.csv(), R allocates all
available memory (about 4.9 Gb) when loading the files, which is over
300 times the size of the raw data. Here are the scripts used to
generate the CSV files as well as the R code:
Scripts (run