diff --git a/docs/users_guide/9.10.1-notes.rst b/docs/users_guide/9.10.1-notes.rst index e5b80043bdf7b77efac6702f92793443d6e66a5f..8a3c9db4b0885f3e7c0400438839f7c5fff2bdf8 100644 --- a/docs/users_guide/9.10.1-notes.rst +++ b/docs/users_guide/9.10.1-notes.rst @@ -60,6 +60,11 @@ GHCi Runtime system ~~~~~~~~~~~~~~ +- Internal fragmentation incurred by the non-moving GC's allocator has been reduced for small objects. + In one real-world application, this has reduced resident set size by about 20% and modestly improved run-time. + See :ghc-ticket:`23340`. + :rts-flag:`--nonmoving-dense-allocator-count=⟨count⟩` has been added to fine-tune this behaviour. + ``base`` library ~~~~~~~~~~~~~~~~