The running speed of Matlab in Linux

For more information about the running speed of Matlab in Linux-general Linux technology-Linux technology and application, see the following. I am a newbie. I saw many people on the internet saying that running Matlab in Linux is much faster than running Matlab in Windows. If I want to try it, I have installed Matlab 2010a on a Redhat5.2 server.
After solving a series of problems, the installation was successful. I immediately wrote a small program to try out the results. The results were unexpected! The following is a small program I wrote:
For I = 1:10000
For j = 1:1000
For k = 1:1000
A = 10 ^ 10;
End
End
End
Is nested loop. The strange thing is that in my desktop Windows system, the running time is 30.475802 seconds, while in the Linux system where the hardware is far better than my desktop server, the running time is 30.738744, it is slower than windows !!
I am very grateful to anyone who knows where the problem is !! (6) m: B