#13225: Fannkuch-redux time regression from join point patch -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.1 Keywords: JoinPoints | Operating System: Unknown/Multiple Architecture: | Type of failure: Runtime Unknown/Multiple | performance bug Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- According to [https://perf.haskell.org/ghc/#revision/8d5cf8bf584fd4849917c29d82dcf46ee75dd... Gipeda], the join point rework caused an impressive 99.9% drop in allocations in fannkuch-redux, but an 8.57% increase in its run-time. Looking at the graph, it appears that this is not just noise. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13225 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler