300 updates of 3x0ng gameworld with no drawing:

with SBCL x86-64
-                SAMPLES  TOTAL    MINIMUM  MAXIMUM  MEDIAN  AVERAGE   DEVIATION
REAL-TIME        300      0.129    0        0.014    0       0.00043   0.001137
RUN-TIME         300      0.112    0        0.004    0       0.000373  0.001164
USER-RUN-TIME    300      0.108    0        0.004    0       0.00036   0.001145
SYSTEM-RUN-TIME  300      0.004    0        0.004    0       0.000013  0.000231
PAGE-FAULTS      300      0        0        0        0       0         0.0
GC-RUN-TIME      300      0        0        0        0       0         0.0
BYTES-CONSED     300      2616496  0        915552   0       8721.653  53945.15
EVAL-CALLS       300      0        0        0        0       0         0.0
---------------------------------------------------------------------

with ecl android --with-gengc:

-             SAMPLES  TOTAL      MINIMUM  MAXIMUM  MEDIAN   AVERAGE    DEVIATION
REAL-TIME     300      19.709     0.031    0.399    0.035    0.065697   0.095117
RUN-TIME      300      17.61      0        0.39     0.03     0.0587     0.094018
BYTES-CONSED  300      301148312  1000832  1007760  1003624  1003827.7  1211.2412