It may not help very much, but I just tried your command under Cygwin, Win 7 and 8 cores (in other words, a configuration very similar to what you have). First call and second one: 

Laurent@Laurent-HP ~
$ time /usr/bin/perl -e 'use File::Temp'

real    0m0.763s
user    0m0.108s
sys     0m0.139s

Laurent@Laurent-HP ~
$ time /usr/bin/perl -e 'use File::Temp'

real    0m0.164s
user    0m0.093s
sys     0m0.062s

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In reply to Re: File::Temp painfully slow under Cygwin by Laurent_R
in thread File::Temp painfully slow under Cygwin by dds

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