ghc-trace-events (hackage): ghc-trace-events provides faster traceEvent and traceMarker as well as arbitrary binary object logging for the eventlog framework. Unlike the eventlog tracing functions in base, all the tracing functions in this library don't evaluate the input if user event logging (the -lu flag) is disabled, which can give a significant boost in performance. Take a look at the benchmark suite for the details.  This library provies the following modules:
Keywords: bsd3|development|ghc|library|trace