if ( !SvIsUV($arg) && SvIOK($arg) && SvIV($arg) < 0 ) {

##</code><code>##

llil2d start
get_properties : 10 secs
sort + output  : 21 secs
total          : 31 secs

##</code><code>##

my_test start
get_properties: 16 secs
sort + output: 21 secs
total: 37 secs