CL-USER> (sb-ext:gc :full T)
NIL
CL-USER> (room)
Dynamic space usage is:   30,734,336 bytes.
Immobile space usage is:  16,535,520 bytes (783,248 bytes overhead).
Read-only space usage is:  6,914,112 bytes.
Static space usage is:         3,424 bytes.
Control stack usage is:        4,528 bytes.
Binding stack usage is:          640 bytes.
Control and binding stack usage is for the current thread only.
Garbage collection is currently enabled.

Breakdown for dynamic space:
   9,509,936 bytes for 162,416 instance objects
   8,261,264 bytes for  56,573 simple-vector objects
   5,886,848 bytes for 367,928 cons objects
   1,833,568 bytes for   4,858 simple-character-string objects
   1,722,176 bytes for  21,532 simple-array-unsigned-byte-8 objects
   2,648,576 bytes for  57,803 other objects

  29,862,368 bytes for 671,110 dynamic objects (space total)

Breakdown for immobile space:
  13,589,456 bytes for 21,981 code objects
   1,376,160 bytes for 28,670 symbol objects
     786,656 bytes for 21,862 other objects

  15,752,272 bytes for 72,513 immobile objects (space total)
; No value
CL-USER> (ql:quickload :3d-math)
To load "3d-math":
  Load 1 ASDF system:
    3d-math
; Loading "3d-math"
.....
(:3D-MATH)
CL-USER> (sb-ext:gc :full T)
NIL
CL-USER> (room)
Dynamic space usage is:   38,245,536 bytes.
Immobile space usage is:  22,076,960 bytes (133,200 bytes overhead).
Read-only space usage is:  6,914,112 bytes.
Static space usage is:         3,424 bytes.
Control stack usage is:        4,528 bytes.
Binding stack usage is:          640 bytes.
Control and binding stack usage is for the current thread only.
Garbage collection is currently enabled.

Breakdown for dynamic space:
  12,138,368 bytes for 200,110 instance objects
   9,434,048 bytes for  76,070 simple-vector objects
   7,290,480 bytes for 455,655 cons objects
   2,635,440 bytes for  23,533 simple-array-unsigned-byte-8 objects
   2,336,928 bytes for   9,040 simple-character-string objects
   3,416,144 bytes for  76,613 other objects

  37,251,408 bytes for 841,021 dynamic objects (space total)

Breakdown for immobile space:
  19,613,952 bytes for 31,716 code objects
   1,378,560 bytes for 28,720 symbol objects
     951,248 bytes for 26,798 other objects

  21,943,760 bytes for 87,234 immobile objects (space total)
; No value
CL-USER>