（安装perl时若产生系统报错，Can't locate Time/HiRes.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at ./Run line 6.，就是因为没有装perl-Time-HiRes，详见
http://nayan115.i.sohu.com/blog/view/248921862.htm
）
