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| author | Ben Gamari <ben@smart-cactus.org> | 2017-07-23 12:59:49 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2017-07-23 15:47:25 -0400 |
| commit | c9451959d8796ee5458cd0666dd2bc2114ac10d7 (patch) | |
| tree | 6a2e572224ae59143e116097359cb51e5cb717c7 /docs/users_guide/profiling.rst | |
| parent | 44b090be9a6d0165e2281542a7c713da1799e885 (diff) | |
| download | haskell-c9451959d8796ee5458cd0666dd2bc2114ac10d7.tar.gz | |
users-guide: Fix various wibbles
Diffstat (limited to 'docs/users_guide/profiling.rst')
| -rw-r--r-- | docs/users_guide/profiling.rst | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/docs/users_guide/profiling.rst b/docs/users_guide/profiling.rst index 0a4ba09fe2..e3796ed7a6 100644 --- a/docs/users_guide/profiling.rst +++ b/docs/users_guide/profiling.rst @@ -429,6 +429,8 @@ enclosed between ``+RTS ... -RTS`` as usual): .. rts-flag:: -V ⟨secs⟩ + :default: 0.02 + Sets the interval that the RTS clock ticks at, which is also the sampling interval of the time and allocation profile. The default is 0.02 seconds. The runtime uses a single timer signal to count ticks; this timer signal is @@ -929,14 +931,15 @@ reasons for this: - Garbage collection requires more memory than the actual residency. The factor depends on the kind of garbage collection algorithm in use: a major GC - in the standard generation copying collector will usually require 3L bytes of - memory, where L is the amount of live data. This is because by default (see - the RTS :rts-flag:`-F ⟨factor⟩` option) we allow the old generation to grow - to twice its size (2L) before collecting it, and we require additionally L - bytes to copy the live data into. When using compacting collection (see the - :rts-flag:`-c` option), this is reduced to 2L, and can further be reduced by - tweaking the :rts-flag:`-F ⟨factor⟩` option. Also add the size of the - allocation area (see :rts-flag:`-A ⟨size⟩`). + in the standard generation copying collector will usually require :math:`3L` + bytes of memory, where :math:`L` is the amount of live data. This is because + by default (see the RTS :rts-flag:`-F ⟨factor⟩` option) we allow the old + generation to grow to twice its size (:math:`2L`) before collecting it, and + we require additionally :math:`L` bytes to copy the live data into. When + using compacting collection (see the :rts-flag:`-c` option), this is reduced + to :math:`2L`, and can further be reduced by tweaking the :rts-flag:`-F + ⟨factor⟩` option. Also add the size of the allocation area (see :rts-flag:`-A + ⟨size⟩`). - The stack isn't counted in the heap profile by default. See the RTS :rts-flag:`-xt` option. |