performance: 0.813
graphic: 0.744
device: 0.711
network: 0.530
vnc: 0.507
other: 0.482
files: 0.439
PID: 0.429
socket: 0.411
debug: 0.365
semantic: 0.364
boot: 0.339
permissions: 0.294
KVM: 0.206

allocate /  free need use glibs's function.
Description of problem:
https://gitlab.com/qemu-project/qemu/-/blob/master/hw/core/machine.c?ref_type=heads#L982

use g_free to free config,because it is allocated by g_malloc0 

on windows,if use crt's free && glib's(DLL) g_malloc0 ,will crash.