Rstudio and R memory allocation

jcblum · July 31, 2019, 5:56pm

This is not a complete answer (sorry! ) but the wacky memory.limit() result is a known bug, with work underway.

Some previous discussion here:

memory.limit() produces wrong result in RStudio but not in R RStudio IDE

R on Windows running in RStudio produces a grossly incorrect result for memory.limit() (which should be in Mb) even though the command works perfect fine in the standard Windows RGui. Here's what I get in a fresh session in RStudio on a machine with 16 Gb of RAM: > memory.limit() [1] 1.759219e+13 > sessionInfo() R version 3.6.1 (2019-07-05) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 17763) Matrix products: default locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: […

And the Github issue is here:

github.com/rstudio/rstudio

R 3.6.0 (but not R 3.5.3) incorrectly reports memory.limit()

opened 02:54PM - 20 Jun 19 UTC

closed 09:07PM - 15 Oct 19 UTC

WilDoane

bug reproducible

On Windows 10 64bit Base R's memory.limit() function reports wildly different… results in (a) R Console and (b) RStudio 1.3.2xx's console for R 3.6.0. R3.5.3 reports 16279, as expected on my system, in both RConsole and RStudio. R3.6.0 reports 16279 (R Console) and erroneously reports 17592186044416 (RStudio console) memory.limit() results: . | R 3.5.3 | R 3.6.0 ---|---|--- R Console | 16279 | 16279 RStudio 1.3.2xx | 16279 | 17592186044416 ``` ###################################################################################### # R 3.5.3 (R console) ###################################################################################### > Sys.info() sysname release version machine "Windows" "10 x64" "build 16299" "x86-64" > R.version _ platform x86_64-w64-mingw32 arch x86_64 os mingw32 system x86_64, mingw32 status major 3 minor 5.3 year 2019 month 03 day 11 svn rev 76217 language R version.string R version 3.5.3 (2019-03-11) nickname Great Truth > rstudioapi::getVersion() Error: RStudio not running > memory.limit() [1] 16279 > memory.size() [1] 41.87 ###################################################################################### # R 3.6.0 (R console) ###################################################################################### > Sys.info() sysname release version machine "Windows" "10 x64" "build 16299" "x86-64" > R.version _ platform x86_64-w64-mingw32 arch x86_64 os mingw32 system x86_64, mingw32 status major 3 minor 6.0 year 2019 month 04 day 26 svn rev 76424 language R version.string R version 3.6.0 (2019-04-26) nickname Planting of a Tree > rstudioapi::getVersion() Error: RStudio not running > memory.limit() [1] 16279 > memory.size() [1] 42.77 ###################################################################################### # R 3.5.3 (RStudio) ###################################################################################### > Sys.info() sysname release version machine "Windows" "10 x64" "build 16299" "x86-64" > R.version _ platform x86_64-w64-mingw32 arch x86_64 os mingw32 system x86_64, mingw32 status major 3 minor 5.3 year 2019 month 03 day 11 svn rev 76217 language R version.string R version 3.5.3 (2019-03-11) nickname Great Truth > rstudioapi::getVersion() [1] ‘1.3.236’ > memory.limit() [1] 16279 > memory.size() [1] 74.1 ###################################################################################### # R 3.6.0 (RStudio) ###################################################################################### > Sys.info() sysname release version machine "Windows" "10 x64" "build 16299" "x86-64" > R.version _ platform x86_64-w64-mingw32 arch x86_64 os mingw32 system x86_64, mingw32 status major 3 minor 6.0 year 2019 month 04 day 26 svn rev 76424 language R version.string R version 3.6.0 (2019-04-26) nickname Planting of a Tree > rstudioapi::getVersion() [1] ‘1.3.236’ > memory.limit() [1] 1.759219e+13 > memory.size() [1] 43.41 ###################################################################################### # R 3.5.3 (RStudio) ###################################################################################### > Sys.info() sysname release version machine "Windows" "10 x64" "build 16299" "x86-64" > R.version _ platform x86_64-w64-mingw32 arch x86_64 os mingw32 system x86_64, mingw32 status major 3 minor 5.3 year 2019 month 03 day 11 svn rev 76217 language R version.string R version 3.5.3 (2019-03-11) nickname Great Truth > rstudioapi::getVersion() [1] ‘1.3.260’ > memory.limit() [1] 16279 > memory.size() [1] 74.43 ###################################################################################### # R 3.6.0 (RStudio) ###################################################################################### > Sys.info() sysname release version machine "Windows" "10 x64" "build 16299" "x86-64" > R.version _ platform x86_64-w64-mingw32 arch x86_64 os mingw32 system x86_64, mingw32 status major 3 minor 6.0 year 2019 month 04 day 26 svn rev 76424 language R version.string R version 3.6.0 (2019-04-26) nickname Planting of a Tree > rstudioapi::getVersion() [1] ‘1.3.260’ > memory.limit() [1] 1.759219e+13 > memory.size() [1] 55.22 ```