Groups > comp.os.linux.development.apps > #840

Re: g++ spent lots of user time

From	Johann Klammer <klammerj@NOSPAM.a1.net>
Newsgroups	comp.os.linux.development.apps
Subject	Re: g++ spent lots of user time
Date	2017-03-01 17:18 +0100
Organization	Aioe.org NNTP Server
Message-ID	<o96rbm$ka7$1@gioia.aioe.org> (permalink)
References	<9e7e5a19-9122-4b1a-9532-d938bb192a4d@googlegroups.com>

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On 03/01/2017 03:05 PM, wij@totalbb.net.tw wrote:
> Why did the compilation took so long in user time?
> 
> -----------------
> $g++ --version
> g++ (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)
> ...
> 
> $time g++ -c -Wall -pthread -fPIC dsmain.cpp
> 
> real	6m10.623s
> user	6m8.142s
> sys	0m0.099s
> 
That's g++. especially their C++ compiler is awfully slow. 
Not sure what it is. maybe the parser... those STL headers
with all the templates. or their garbage collector. I
suspect it's not very good at collecting the garbage...
Maybe it is time to look for alternatives.

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g++ spent lots of user time wij@totalbb.net.tw - 2017-03-01 06:05 -0800
  Re: g++ spent lots of user time Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2017-03-01 09:50 -0500
    Re: g++ spent lots of user time wij@totalbb.net.tw - 2017-03-01 17:12 -0800
      Re: g++ spent lots of user time Rainer Weikusat <rweikusat@talktalk.net> - 2017-03-02 15:33 +0000
  Re: g++ spent lots of user time Johann Klammer <klammerj@NOSPAM.a1.net> - 2017-03-01 17:18 +0100
    Re: g++ spent lots of user time wij@totalbb.net.tw - 2017-03-01 17:29 -0800

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