[[!comment format=mdwn username="joey" subject="""comment 3""" date="2017-09-29T19:35:28Z" content=""" Above was with daily OSX build, which is currently built with ghc 8.0.2. My linux test was also with ghc 8.0.2. It may be that ghc 8.2.1 has different cleanup behavior which causes more open files. The other reporter was also using ghc 8.2.1. """]]