This page is intended to document issues when effective execution of Tcl scripts is targeted. Please add any single topic below as to keep it as a comprehensive list. Append general comments as usual to the end of this page -- RJM.
RJM: Referencing to (2) I can say that I found this by accident. On a Win98 machine with 266 MHz clock, the following execution times apply:
An empty proc without Arguments:
% proc test {} {} % time {test} 1000
95 microseconds per iteration
An empty proc with an Argument:
% proc fast {x} {} % time {fast 5} 1000
12 microseconds per iteration
I performed several variations, also with filled body and so on. The crucial differencs lies in defining a proc with or without an argument.