I would like to submit issue to wishlist at the bug reporting system ( https://www.r-project.org/bugs.html) based on my emails. Unfortunately I don't have bugzilla account. Can someone from R-core help to obtain it? (I see that I should *"ask an R Core member to add you manually to R’s Bugzilla members"*)
- https://stat.ethz.ch/pipermail/r-devel/2017-June/074487.html - https://stat.ethz.ch/pipermail/r-devel/2017-June/074500.html - https://stat.ethz.ch/pipermail/r-devel/2017-July/074614.html 2017-07-09 13:12 GMT+03:00 Dmitriy Selivanov <selivanov.dmit...@gmail.com>: > Dear R-devel mailing list and especially R-core, is there any chance to > receive feedback on issue I described in previous emails? I would consider > such behaviour as a bug. > > As a work-around I've created small "clean-up" function: > > malloc_trim_finalizer = function(e) { > res = NULL > if(R.version$os == "linux-gnu") { > flog.debug("Calling malloc_trim(0L) to trigger glibc to release > memory\n") > res = malloc_trim(0L) > } > res > } > > And at the end of each function which produce a lot of intermediate small > objects I provide it to reg.finalizer(): > some_function = function(...) { > # do some useful work > result = TRUE > # register finalizer > e = environment() > reg.finalizer(e, malloc_trim_finalizer) > return(result) > } > > 2017-06-22 11:12 GMT+04:00 Dmitriy Selivanov <selivanov.dmit...@gmail.com> > : > >> A few additional details. According to Linux Programmer's Manual >> >> 1. http://man7.org/linux/man-pages/man3/mallopt.3.html >> 2. http://man7.org/linux/man-pages/man3/malloc_trim.3.html >> >> And if I understood everything correctly `free` could trigger >> `malloc_trim` based on value of several environment variables - >> MALLOC_TOP_PAD_ and MALLOC_TRIM_THRESHOLD_. However setting them as low as >> 1 or 0 doesn't have any effect (but as I wrote in previous email manual >> call of `malloc_trim` helps to release memory). >> > > > > -- > Regards > Dmitriy Selivanov > -- Regards Dmitriy Selivanov [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
