git clone https://github.com/suzusuzu/malloc-rs.git
cd malloc-rs
cargo build
export LD_PRELOAD=`pwd`/target/debug/libmalloc_rs.so # malloc-rs allocator
# python3 -c 'print("hello world")'
unset LD_PRELOAD # system allocator

cargo build
export LD_PRELOAD=`pwd`/target/debug/libmalloc_rs.so
python3 <<EOF
import numpy as np
import random
while True:
    print(np.sum(np.random.random(random.randint(1000, 10000))))
EOF

cargo build
export LD_PRELOAD=`pwd`/target/debug/libmalloc_rs.so
wget https://raw.githubusercontent.com/mattn/invader-vim/master/plugin/invader.vim
vim
#:source ./invader.vim
#:Invader