MinGW 3.4.5 C++ vs. Visual Studio 2008 C++ vs. GNU C++ make quite different quality in speed of executable code.Currently MinGW is 1.902 times slower than VC++, and VC++ is 1.315 times slower than GNU:MinGW default:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410063201, n=100000.000003, time=41.594000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=16.937000s.Total time=58.531000s.VC default:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410063201, n=100000.000003, time=41.609000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=15.469000s.Total time=57.078000s.VC -O3:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410063201, n=100000.000003, time=41.593000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=15.453000s.Total time=57.046000s.MinGW -O3 -mtune=i686:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410063201, n=100000.000003, time=37.437000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=15.766000s.Total time=53.203000s.VC IDE default:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410063201, n=100000.000003, time=15.078000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=12.953000s.Total time=28.031000s.VC IDE -O3:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410063201, n=100000.000003, time=15.078000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=12.890000s.Total time=27.968000s.openSUSE 11.2 GNU -O3 -mtune=i686:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410065408, n=100000.000009, time=16.060000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=5.310000s.Total time=21.370000s.Debian 5.0 GNU -O3 -mtune=i686:Speedtest 1.0 © 2008 SiipiCounting 10 billion floating points...Done. i=1410065408, n=100000.000009, time=16.650000s.Creating and deleting 1 billion class objects...Done. i=100000000, time=4.620000s.Total time=21.270000s.

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