Sounds fantastic

I'm using 'prof2dot' on a ~3000 LOC project and it's working well. Visual quality metrics like this and Haskell Program Coverage makes using Haskell in the corporate world a little easier to pull off. Zero crash reports helps too. ;-) -Greg F On Tue, Aug 5, 2008 at 1:02 PM, Neil Mitchell wrote:

Hi Gregory,

Sounds fantastic. I'd love to see a single example of the resultant .dot file, so I can figure out just how useful this might be to me.

Thanks

Neil

On Tue, Aug 5, 2008 at 8:50 PM, Gregory Wright wrote:

...

I am pleased to announce the release of prof2dot version 0.4.1, a graphical profiling tool for use with GHC.

The program is a filter that takes the profiling output generated by

running

...

a GHC-compiled program with the "+RTS -px -RTS" option and turns it into a dot file. (The "dot" format is a textual representation of a directed or undirected graph.) The dot file can rendered in any format supported by Graphviz's dot program, and the file itself can be post-processed or edited to adjust the layout.

The new release fixes a number of bugs and has some significant improvements in its internal organization over the previous 0.3.1 ("Premature Optimizations 'r' Us") release.

Version 0.4.1 ("Triumph of Hope Over Experience") defaults to generating a call graph colored by number of entries into each call center. There is now an option to annotate the graph edges with the triple of (cost center entries, ticks, allocations). Module names are also given in each cost center.

The latest version has been tested on the profiling output of some moderately large programs, e.g., the profile produced by a "darcs get" of the entire ghc repository:

$ darcs get http://darcs.haskell.org/ghc +RTS -px -RTS

There is also better error reporting of parser errors and consistency checking of the internal graph data structure. If anyone comes across a parse failure or an assertion failure, please report it to the author.

The "dot" program from the graphviz tools is required to render the output of prof2dot. Very large graphs, or graphs with extensive annotations, can exceed the capabilities of dot.

Prof2dot is available from Hackage in the "development" category.

-Greg _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users

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