#15524: Performance regression when using the GHC API to evaluate code compared to 8.4 -------------------------------------+------------------------------------- Reporter: vaibhavsagar | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.6.1-beta1 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: | -------------------------------------+------------------------------------- Description changed by vaibhavsagar: Old description:
I've been in the process of updating IHaskell to support GHC 8.6 and the test suite has become agonisingly slow as compared to GHC 8.4 and below. I've been able to work around this by using `--enable-executable-dynamic` as suggested by `christiaanb` on `#ghc`but I thought this was worth reporting as a bug.
To reproduce this on a Linux installation with Nix:
1. `git clone https://github.com/gibiansky/IHaskell --branch support- ghc-8-6 repro` 2. `cd repro` 3. Comment out `--enable-executable-dynamic` in `release-8.6.nix` 4. `nix-build release-8.6.nix`
New description: I've been in the process of updating IHaskell to support GHC 8.6 and the test suite has become agonisingly slow as compared to GHC 8.4 and below. I've been able to work around this by using `--enable-executable-dynamic` as suggested by `christiaanb` on `#ghc`but I thought this was worth reporting as a bug. To reproduce this on a Linux installation with Nix: 1. `git clone https://github.com/gibiansky/IHaskell` 2. `cd IHaskell` 3. `git checkout 6058cd4fac01a2023dbd09d174f1f8d4c36e7475` 4. Comment out `--enable-executable-dynamic` in `release-8.6.nix` 5. `nix-build release-8.6.nix` -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15524#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler