Depending on your operating system, the freed up memory might not be returned to the operating system, but kept in the process space.
On Sat, Sep 4, 2010 at 10:17 PM, Hyunchul Kim <sun...@sfc.keio.ac.jp> wrote: > Hi, all > > Thank you for your comments. > I think that I misunderstood what gc() does because gc() is working as you > posted. > > I posted my question because gc() doesn't reduce memory in use in a few > system memory monitoring tools that I tested. > > Regards, > > Hyunchul > > On Sat, Sep 4, 2010 at 8:50 PM, jim holtman <jholt...@gmail.com> wrote: >> >> Seems to work for me: >> >> > x <- matrix(0,10000,10000) >> > object.size(x) >> 800000112 bytes >> > gc() >> used (Mb) gc trigger (Mb) max used (Mb) >> Ncells 174104 4.7 741108 19.8 741108 19.8 >> Vcells 101761938 776.4 113632405 867.0 102762450 784.1 >> > rm(x) >> > gc() >> used (Mb) gc trigger (Mb) max used (Mb) >> Ncells 174202 4.7 741108 19.8 741108 19.8 >> Vcells 1761954 13.5 90905923 693.6 102762450 784.1 >> >> >> On Sat, Sep 4, 2010 at 12:46 AM, Hyunchul Kim >> <hyunchul.kim....@gmail.com> wrote: >> > Hi, all >> > >> > I have a huge object that use almost all of available memory. >> > >> > R> rm(a_huge_object) >> > R> gc() >> > >> > doesn't free memory and ?gc doesn't show anything. >> > >> > Are there any suggestion? >> > >> > Thanks in advance, >> > >> > Regards, >> > >> > Hyunchul >> > >> > [[alternative HTML version deleted]] >> > >> > ______________________________________________ >> > R-help@r-project.org mailing list >> > https://stat.ethz.ch/mailman/listinfo/r-help >> > PLEASE do read the posting guide >> > http://www.R-project.org/posting-guide.html >> > and provide commented, minimal, self-contained, reproducible code. >> > >> >> >> >> -- >> Jim Holtman >> Cincinnati, OH >> +1 513 646 9390 >> >> What is the problem that you are trying to solve? > > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
