Hello Omer, I don't quite understand; is +RTS -hc what you want? That will output a heap profile per cost center, which will give you residency. Is the problem that you need a heap profile every minor GC rather than major GC (e.g. something like https://ghc.haskell.org/trac/ghc/ticket/8504 ?)
Edward Excerpts from Ömer Sinan Ağacan's message of 2016-08-08 11:28:48 +0000: > One thing that we can't currently see in cost center reports is the residency > and because of that cost centers can't be used for fixing memory leaks or > reducing max. memory residency. For example, I can have a function that > returns > an `Int` but allocates lots of intermediate data on the way. In the reports I > see this function as allocates a lot, but it has no effect on my program's > residency (especially if it runs fast). > > So I'm thinking of somehow using cost centers for reasoning about memory > residency. One idea is to print a summary after every major GC, by doing > another > pass on the whole heap and recording attributions. This can be used for > plotting > live data of cost centers over time. (like hp2ps but for cost centers) > > Another idea is to add "residency" column in the profiling reports. Not sure > how > to update this column in runtime though. > > The main use case for me is fixing T1969, but of course this is a very general > solution. > > Does anyone have any other ideas? _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
