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Diffstat (limited to 'docs/users_guide/runtime_control.rst')
| -rw-r--r-- | docs/users_guide/runtime_control.rst | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/docs/users_guide/runtime_control.rst b/docs/users_guide/runtime_control.rst index 049ba13839..a68b1bd266 100644 --- a/docs/users_guide/runtime_control.rst +++ b/docs/users_guide/runtime_control.rst @@ -313,7 +313,7 @@ collection. Hopefully, you won't need any of these in normal operation, but there are several things that can be tweaked for maximum performance. -.. rts-flag:: -xn +.. rts-flag:: --nonmoving-gc :default: off :since: 8.10.1 @@ -324,12 +324,20 @@ performance. Enable the concurrent mark-and-sweep garbage collector for old generation collectors. Typically GHC uses a stop-the-world copying garbage collector for all generations. This can cause long pauses in execution during major - garbage collections. :rts-flag:`-xn` enables the use of a concurrent - mark-and-sweep garbage collector for oldest generation collections. - Under this collection strategy oldest-generation garbage collection - can proceed concurrently with mutation. + garbage collections. :rts-flag:`--nonmoving-gc` enables the use of a + concurrent mark-and-sweep garbage collector for oldest generation + collections. Under this collection strategy oldest-generation garbage + collection can proceed concurrently with mutation. + + Note that :rts-flag:`--nonmoving-gc` cannot be used with ``-G1`` nor + :rts-flag:`-c`. + +.. rts-flag:: -xn + + :default: off + :since: 8.10.1 - Note that :rts-flag:`-xn` cannot be used with ``-G1`` nor :rts-flag:`-c`. + An alias for :rts-flag:`--nonmoving-gc` .. rts-flag:: -A ⟨size⟩ |