#7561: Unnecessary Heap Allocations - Slow Performance -------------------------------+-------------------------------------------- Reporter: wurmli | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.6.1 Keywords: | Os: Linux Architecture: x86_64 (amd64) | Failure: Runtime performance bug Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | -------------------------------+-------------------------------------------- Changes (by simonmar):
* cc: benl, rl@… (added) * component: Build System => Compiler * milestone: => 7.8.1 Comment: I just reproduced it with 7.4.1: the program does appear to run many times faster with profiling ''enabled'', which is indeed very suspicious. I suggest that someone familiar with `vector` has a look to see which optimisation or RULE is not happening. Roman or Ben perhaps? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7561#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler _______________________________________________ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs