#2374: MutableByteArray# is slower than Addr# -------------------------------------+------------------------------------- Reporter: dolio | Owner: Type: bug | Status: new Priority: lowest | Milestone: 8.0.1 Component: Compiler (NCG) | Version: 6.8.2 Resolution: | Keywords: performance | array Operating System: Linux | Architecture: x86_64 Type of failure: Runtime | (amd64) performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): Hmm, indeed there still seems to be a bit of a difference here ([[https://github.com/bgamari/T2374-benchmark|benchmark]]). {{{ benchmarking ptr time 949.1 ms (945.9 ms .. 953.2 ms) 1.000 R² (1.000 R² .. 1.000 R²) mean 954.2 ms (952.3 ms .. 955.7 ms) std dev 2.470 ms (0.0 s .. 2.710 ms) variance introduced by outliers: 19% (moderately inflated) benchmarking bytearr time 989.2 ms (979.9 ms .. 997.8 ms) 1.000 R² (1.000 R² .. 1.000 R²) mean 984.2 ms (981.2 ms .. 986.3 ms) std dev 3.125 ms (0.0 s .. 3.602 ms) variance introduced by outliers: 19% (moderately inflated) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/2374#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler