gc-performance.txt

# jemalloc explicit malloc()/free()
/usr/bin/time ./btree-jemalloc 20 >/dev/null
       10.77 real        10.67 user         0.08 sys
# Boehm GC with four parallel marker threads
GC_MARKERS=4 /usr/bin/time ./btree-gc 20 >/dev/null
        4.46 real         5.49 user         0.10 sys
# Boehm GC with single-threaded marking
GC_MARKERS=1 /usr/bin/time ./btree-gc 20 >/dev/null
        5.35 real         5.31 user         0.04 sys
# Boehm GC with explicit deallocation
GC_MARKERS=1 /usr/bin/time ./btree-gc-free 20 >/dev/null
        6.65 real         6.61 user         0.02 sys
# Boehm GC with incremental collection (single-threaded)
/usr/bin/time ./btree-gc-inc 20 >/dev/null
       10.90 real         9.16 user         3.50 sys
# Nim reference counting GC
/usr/bin/time ./btree-nim 20 >/dev/null
       11.24 real        11.16 user         0.07 sys
# Nim with Boehm GC
GC_MARKERS=4 /usr/bin/time ./btree-nim-boehm 20 >/dev/null
        4.57 real         5.73 user         0.10 sys
# D garbage collector
/usr/bin/time ./btree-d 20 >/dev/null
       19.20 real        19.05 user         0.12 sys
# System malloc()/free()
/usr/bin/time ./btree-sysmalloc 20 >/dev/null
       34.59 real        34.19 user         0.37 sys
# Tiny GC
/usr/bin/time ./btree-tiny-gc 20 >/dev/null
       42.36 real        31.28 user        10.40 sys