4.5 Storage Information

• for each type class
  • the number of pages so-far allocated for the type class
  • the maximum number of pages for the type class
  • the percentage of used cells to cells so-far allocated
  • the number of times the garbage collector has been called to collect cells of the type class
  • the implementation types that belong to the type class
• the number of pages actually allocated for contiguous blocks
• the maximum number of pages for contiguous blocks
• the number of times the garbage collector has been called to collect contiguous blocks
• the number of pages in the hole
• the maximum number of pages for relocatable blocks
• the number of times the garbage collector has been called to collect relocatable blocks
• the total number of pages allocated for cells
• the total number of pages allocated
• the number of available pages
• the number of pages ECL can use.

The number of times the garbage collector has been called is not shown, if the number is zero.

In the following example, the maximum of 531 pages have already been allocated for the type class to which cons belongs, but only 16.9 percent of the cells are actually used. The garbage collector was once invoked to collect cells in this type class.

> (room)
 200/200   48.4%    CONS BIGNUM RATIO COMPLEX STRUCTURE
   1/5      7.4%    SHORT-FLOAT RANDOM-STATE READTABLE
  10/34    99.3%    LONG-FLOAT CFUN CCLOSURE
  47/64    71.9%    SYMBOL
   1/1      8.9%    PACKAGE
   2/69    81.8%    ARRAY HASH-TABLE VECTOR BIT-VECTOR STREAM
  16/40    95.9%    STRING
   1/1      6.8%    PATHNAME

   0/271            contiguous (1 blocks)
     127            hole
     40     3.4%    relocatable

  278 pages for cells
  445 total pages
14709 pages available
 1230 pages in heap but not gc'd + pages needed for gc marking
16384 maximum pages