[CM] Protecting Scheme data structures from GC?

[bil at ccrma.Stanford.EDU]

> Do you have any suggestions for what one can do to cut GC times down
> on a code level when there is a lot of code going?

Avoid creating things unnecessarily, and don't keep large structures
around when they're no longer needed.  The (*s7* 'memory-usage)
function can show how many objects of each type are currently
in the heap.