ghc-events-analyze: Analyze and visualize event logs

This is a package candidate release! Here you can preview how this package release will appear once published to the main package index (which can be accomplished via the 'maintain' link below). Please note that once a package has been published to the main package index it cannot be undone! Please consult the package uploading documentation for more information.

[maintain] [Publish]

ghc-events-analyze is a simple Haskell profiling tool that uses GHC's eventlog system. It helps with some profiling use cases that are not covered by the existing GHC profiling modes or tools. It has two major features:

  1. While ThreadScope shows CPU activity across all your cores, ghc-events-analyze shows CPU activity across all your Haskell threads.

  2. It lets you label periods of time during program execution (by instrumenting your code with special trace calls) and then lets you visualize those time periods or get statistics on them.

It is very useful for profiling code when ghc's normal profiling mode is not available, or when using profiling mode would perturb the code too much. It is also useful when you want time-profiling information with a breakdown over time rather than totals for the whole run.

The blog post Performance profiling with ghc-events-analyze describes the motivation in more detail.


Versions 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.2.5, 0.2.6, 0.2.7, 0.2.8
Change log ChangeLog
Dependencies base (>=4.8 && <4.12), blaze-svg (>=0.3 && <0.4), bytestring (>=0.10 && <0.11), containers (>=0.5 && <0.7), diagrams-lib (>=1.3 && <1.5), diagrams-svg (>=1.1 && <1.5), filepath (>=1.3 && <1.5), ghc-events (>=0.6), hashable (>=1.2 && <1.3), lens (>=3.10 && <4.18), mtl (>=2.2.1 && <2.3), optparse-applicative (>=0.11 && <0.15), parsec (>=3.1 && <3.2), regex-base (>=0.93 && <0.94), regex-pcre-builtin (>=0.94 && <0.95), SVGFonts (>=1.5 && <1.8), template-haskell, th-lift (>=0.6 && <0.8), transformers (>=0.3 && <0.6), unordered-containers (>=0.2 && <0.3) [details]
License BSD-3-Clause
Copyright 2013-2014 Well-Typed LLP
Author Edsko de Vries, Duncan Coutts, Mikolaj Konarski
Category Development, Profiling, Trace
Source repo head: git clone
Uploaded by EdskoDeVries at 2018-10-18T10:43:32Z


Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees