RE: [MACTCL] Does Aqua Tcl/Tk ever give back memory?

[Jeff H. <jeffh@ActiveState.com>]

> Is it the case that Aqua Tcl/Tk cannot shrink it's
> size once the memory has been allocated?

Tcl on Mac is compiled with threads enabled.  In order to
avoid very poor OS malloc performance with threads (which
many OSes suffer from), Tcl has its own threaded malloc
implementation (contributed by the guys at AOL).  This is a
high water mark allocator.  It should return large single
blocks of memory (above 32K IIRC), but if you have lots of
small blocks allocated, they are freed back into a pool.

  Jeff Hobbs, The Tcl Guy
  http://www.ActiveState.com/, a division of Sophos