$ time /usr/local/src/perl-5.10.0-perlmalloc/perl -I/usr/local/src/perl-5.10.0-perlmalloc/lib ~/trash/slow_malloc2.pl
3.027u 0.435s 0:03.68 93.7%     1448+324155k 0+0io 0pf+0w

$ time /usr/local/src/perl-5.10.0-sysmalloc/perl -I/usr/local/src/perl-5.10.0-sysmalloc/lib ~/trash/slow_malloc2.pl
405.090u 189.574s 13:01.52 76.0%        1466+495449k 0+0io 0pf+0w