[GHC] #14383: Allocation in VS up 500%
#14383: Allocation in VS up 500% -------------------------------------+------------------------------------- Reporter: nomeata | Owner: (none) Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 8.3 Keywords: | 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: -------------------------------------+------------------------------------- Somewhere in between the commits fee253fc and 99c61e22 nofib’s `VS` benchmark has allocations increased by 500%. perf.haskell.org is currently defuct (linker errors due to recent changes to the ffi stuff, I believe Moritz is trying to find that out), so I cannot just look there to see which commit broke it. But maybe someone feels like bisecting this. If not maybe perf.haskell.org will be able to tell us once its fixed (although keeping up with GHC commits there is a bit of a pain these days.) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14383 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#14383: Allocation in VS up 500% -------------------------------------+------------------------------------- Reporter: nomeata | Owner: (none) Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 8.3 Resolution: | Keywords: 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: | -------------------------------------+------------------------------------- Comment (by nomeata): I can restrict the problem to the range `33452dfc..99c61e22` (only 340 commits left) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14383#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#14383: Allocation in VS up 500% -------------------------------------+------------------------------------- Reporter: nomeata | Owner: (none) Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 8.3 Resolution: | Keywords: 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: | -------------------------------------+------------------------------------- Comment (by simonpj): Where is nofib's VS benchmark? What's the latest released compiler with good perf? 8.2? 8.0? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14383#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#14383: Allocation in VS up 500% -------------------------------------+------------------------------------- Reporter: nomeata | Owner: (none) Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 8.3 Resolution: | Keywords: 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: | -------------------------------------+------------------------------------- Comment (by nomeata): It’s in `real/eff/VS`, just added this August, so no released compiler has it in the suite. But I can of course test an old compiler with `make NoFibRuns=1 mode=slow HC=ghc-8.0`. I get {{{ 8.0 483117568 8.2 483117520 7ea5d41d 3123117584 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14383#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
participants (1)
-
GHC