Take the tour ×  I've a 9 column data.frame (x) and it has
millions of rows. I was able to read it into R, successfully do
some modifications on it and the code would execute without a
problem. However, when I try to write it out to a .csv file
using   I get an error which says  Error: cannot allocate vector
of size 1.2Gb  This makes no sense as the data is already in
memory, the computations done, and all I want to do is write it
out to disk. Also, while I monitored the memory, the virtual
memory size almost doubled for this process during this write
phase. Would writing a custom C function to write out this
data.frame help? Any suggestions/help/pointers appreciated.  ps:
I'm running all this in a 64 bit ubuntu box with about 24G RAM.
Overall space may not be an issue. The data size is about 10G
share|improve this question The simplest thing to do is to write
it to file in small pieces using append = TRUE. As an aside, the
total RAM installed on your machine can be a misleading
indicator of whether you'll h