#13535: vector test suite uses excessive memory on GHC 8.2 -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: bgamari Type: bug | Status: new Priority: highest | Milestone: 8.2.1 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #10800 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by George): with ghc 8.2.1-rc2 on a Mac, succeeds in less than 4gb , watching Activity Monitor, Memory max usage seems between 3.5 and 4gb: {{{ ulimit -v 4000000; cabal test ... Preprocessing test suite 'vector-tests-O2' for vector-0.12.0.1... ... [4 of 7] Compiling Tests.Vector ( tests/Tests/Vector.hs, dist/build /vector-tests-O2/vector-tests-O2-tmp/Tests/Vector.o ) ... tests/Tests/Vector.hs:438:5: warning: [-Wname-shadowing] This binding for ‘limitUnfolds’ shadows the existing binding imported from ‘Utilities’ at tests/Tests/Vector.hs:5:1-24 (and originally defined at tests/Utilities.hs:347:1-12) | 438 | limitUnfolds f (theirs, ours) | ^^^^^^^^^^^^ [5 of 7] Compiling Tests.Move ( tests/Tests/Move.hs, dist/build /vector-tests-O2/vector-tests-O2-tmp/Tests/Move.o ) ... [7 of 7] Compiling Main ( tests/Main.hs, dist/build/vector- tests-O2/vector-tests-O2-tmp/Main.o ) Linking dist/build/vector-tests-O2/vector-tests-O2 ... Running 2 test suites... Test suite vector-tests-O0: RUNNING... Test suite vector-tests-O0: PASS Test suite logged to: dist/test/vector-0.12.0.1-vector-tests-O0.log Test suite vector-tests-O2: RUNNING... Test suite vector-tests-O2: PASS Test suite logged to: dist/test/vector-0.12.0.1-vector-tests-O2.log 2 of 2 test suites (2 of 2 test cases) passed. bash-3.2$ ghc --version The Glorious Glasgow Haskell Compilation System, version 8.2.0.20170507 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13535#comment:24 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler