| gc {base} | R Documentation |
Garbage Collection
Usage
gc(verbose = .Options$verbose)
gcinfo(verbose)
Arguments
verbose |
logical; if |
Value
A call of gc causes a garbage collection to take place.
This usually takes place automagically without user intervention.
gc returns a 2*2 matrix with rows "Ncells" (cons
cells) and "Vcells" (vector cells, 8 bytes each),
and columns "free" and "total".
The associated function gcinfo sets a flag so that
automatic collection is either silent (verbose=FALSE) or
prints memory use statistics (verbose=TRUE).
See Also
Memory on R's memory management and
gctorture if you are an R hacker.
Examples
gc() #- do it now
gcinfo(TRUE) #-- in the future, show when you do it
x <- integer(0); for(i in 1:18) x _ c(x,i,x)
gcinfo(verbose = FALSE)#-- don't show it anymore
( rgc <- gc(TRUE) )
(100*rgc[,"free"])%/% rgc[,"total"] # the percentages
rgc[2,"free"]/ (1024 / 8) # free vector heap in K bytes