File takes too long to get created in windows 7 machine using ruby

I am using calabash-android in windows 7 for automation of Android apps.

On ruby prompt when I give command

irb(main):001:0> f =‘myoutput.txt’,‘w+’)

It takes 20 seconds to create file. is there any way I can speed this. I
am using ruby 1.9.3p448 (2013-06-27) [i386-mingw32] and calabash-android

It is successfully gets created and give message
irb(main):001:0> f =‘myoutput.txt’,‘w+’)
-rw-r–r-- 1 abhijit.shelar Administrators 0 Aug 31 15:05 myoutput.txt
but its to slow.

Is File Creation is slower in ruby?