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Diffstat (limited to 'docs/users_guide/profiling.rst')
| -rw-r--r-- | docs/users_guide/profiling.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/docs/users_guide/profiling.rst b/docs/users_guide/profiling.rst index 78f96ae8cb..095317e18d 100644 --- a/docs/users_guide/profiling.rst +++ b/docs/users_guide/profiling.rst @@ -1701,6 +1701,16 @@ Using “ticky-ticky” profiling (for implementors) Track allocations of dynamic thunks. +.. ghc-flag:: -ticky-ap-thunk + :shortdesc: Don't use standard AP thunks on order to get more reliable entry counters. + :type: dynamic + :category: + + This basically allows us to get accurate entry counters for code like `f x y` at the cost of code size. + We do this but not using the precomputed standard AP thunk code. + +GHC's ticky-ticky profiler provides a low-level facility for tracking +entry and allocation counts of particular individual closures. Because ticky-ticky profiling requires a certain familiarity with GHC internals, we have moved the documentation to the GHC developers wiki. Take a look at its |