[project @ 1998-01-30 17:01:49 by simonm]

[ghc-hetmet.git] / ghc / docs / users_guide / ticky.lit

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-%************************************************************************
-%*                                                                     *
-\section[ticky-ticky]{Using ``ticky-ticky'' profiling (for implementors)}
-\index{ticky-ticky profiling (implementors)}
-%*                                                                     *
-%************************************************************************
-
-(ToDo: document properly.)
-
-It is possible to compile Glasgow Haskell programs so that they will
-count lots and lots of interesting things, e.g., number of updates,
-number of data constructors entered, etc., etc.  We call this
-``ticky-ticky'' profiling,\index{ticky-ticky profiling}%
-\index{profiling, ticky-ticky} because that's the sound a Sun4 makes
-when it is running up all those counters ({\em slowly}).
-
-Ticky-ticky profiling is mainly intended for implementors; it is quite
-separate from the main ``cost-centre'' profiling system, intended for
-all users everywhere.
-
-To be able to use ticky-ticky profiling, you will need to have built
-appropriate libraries and things when you made the system.  See
-``Customising what libraries to build,'' in the installation guide.
-
-To get your compiled program to spit out the ticky-ticky numbers, use
-a \tr{-r} RTS option\index{-r RTS option}.