my $s = "43436 66 78 5333 3444 ... 345ms : 34.56ms : 45ms";

my @vars = $s =~ /([0-9.]+)ms/g;

if( $s =~ /(\d+)ms : ([0-9.]+)ms : (\d+)ms/ ){
  my @vars = ($1, $2, $3 );
}