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[Chicken-janitors] Re: #458: Chicken can't profile itself

From: Chicken Trac
Subject: [Chicken-janitors] Re: #458: Chicken can't profile itself
Date: Thu, 03 Feb 2011 10:16:35 -0000

#458: Chicken can't profile itself
  Reporter:  sjamaan   |       Owner:                                      
      Type:  defect    |      Status:  reopened                            
  Priority:  major     |   Milestone:  4.7.0                               
 Component:  compiler  |     Version:  4.6.x                               
Resolution:            |    Keywords:  expander, profiler, self-compilation

Comment(by sjamaan):

 It all started when Moritz was complaining that compiling (I think it was)
 his new egg for pulseaudio took too long.

 So I thought it would be a good idea to try building chicken for profiling
 itself because I had no idea where it was spending most of its time. I
 assume it's in the macro expansion (he uses two rather large macros), but
 profiling just the expander itself is not enough; it will use procedures
 from library and other core units, which should also be compiled with
 profiling info so you can see what exactly is the reason for slowness.

 More in general, I'd like to have an idea of where the compiler's
 performance can be improved without a specific idea of what exactly I want
 to profile.

 Up till now I've been able to produce a working profiling chicken by
 manually interfering with the compilation process and disabling profiling
 for two units; the profiler itself and another which I can't remember
 right now. Probably library.scm?

Ticket URL: <>
Chicken Scheme <>
Chicken Scheme is a compiler for the Scheme programming language.

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