- m1 <- 1:(10^9)
- m2 <- 1:(10^9) it exceeded the 12GB physical memory, then starting swapping, I terminated R process.
- restart R
- m1 <- 1:(10^8)
- m2 <- 1:(10^8)
- m3 <- 1:(10^9), then I did `remove(list=ls())` and it removed the object from the environment but the memory did not get released.
- gc() clear memory using garbage collection in R
datafireball 