[ruby-talk:6511] Re:question about memory usage of a script

Hi, 

> The following script uses more memory as N gets bigger.  Should I
> expect it to run in constant space?  If not, what do I need to know to
> understand how the GC reclaims memory?  I'd like to know, so I can get
> an idea of the memory usage of a long-running process, like a server
> written in Ruby.

I think that this script will run constant space, 
but constant space is GC_MALLOC_LIMIT(2 or 8 Mbytes).

Ruby's GC(ruby-1.6.1) start, if
  * freelist is empty
  * malloc_memories > GC_MALLOC_LIMIT
  * malloc request fails.

So, if N is 10 or 20, GC does not execute.

if GC.start use after test(), constant space is small.

---
masato