I just ran a head-to-head comparison of SML/NJ and smlc on all the benchmarks, for the first time since last August. The results are at: ~sweeks/smlc/logs/benchmarks/1999-02-20-14:38:10.html Summary. Out of 16 benchmarks: smlc is slightly slower (< 10%) on two benchmarks smlc is more than 2X faster on 10 becnhmarks smlc is between 20 and 50% faster on the remaining 4