Some benchmark results for various combinations of hardware, Gforth version, and Gforth configuration. You can measure your combination with `make bench'. You can find a table comparing Gforth with four interpretive Forth systems in the manual (Section Performance), and a comparison with more systems in http://www.complang.tuwien.ac.at/pub/papers/ertl&maierhofer95.ps.gz. All times are given in seconds of user time. siev bubble matrix fib machine and configuration 10.99 12.13 11.34 13.13 Pentium 133MHz 256K PB cache; gcc-2.6.3 -DFORCE_REG; gforth-0.1beta 31.90 35.60 28.30 36.70 i486 66MHz 256K cache; gcc-2.6.3 -DFORCE_REG; gforth-0.1alpha 9.0 9.6 7.7 9.6 21064A (Alpha) 289MHz 2M cache; gcc-2.7.0; gforth-0.1beta