# Pi Zero 2 W Config Tunning

## 1.Config and cmdline

Config add:

```
device_tree=bcm2710-rpi-zero-2.dtb
gpu_mem=16
gpu_mem_512=16
```

Cmdline add:

```
smsc95xx.turbo_mode=N cma=16M CMA=16M
```

**Note:**

The min GPU size is >=16M

## 2.Disable BT

Add:

```
dtoverlay=disable-bt
```

## 3.OverClock

Add:

```
boot_delay=1
arm_boost=1
temp_limit=85
temp_soft_limit=85
arm_freq=1366
current_limit_override=1
over_voltage=8
```

## 4.Tunning: Disable vc cma and video code

Add file: **/etc/modprobe.d/blacklist.conf**

```
blacklist bcm2835_codec
blacklist bcm2835_v4l2
blacklist bcm2835_isp
blacklist bcm2835_mmal_vchiq
blacklist vc_sm_cma
```

## 5.Service

```
systemctl stop libvirt-guests; systemctl mask libvirt-guests; \
systemctl stop libvirtd; systemctl mask libvirtd
```

## 6.Optional:

Faster speed instead of running programs with large memory requirements (compressed memory)
Undo the following from cmdline:

```
cgroup_enable=1 cgroup_memory=1 cgroup_enable=cpuset cgroup_enable=memory swapaccount=1 
zswap.enabled=1 zswap.zpool=z3fold zswap.compressor=lz4 zswap.max_pool_percent=25
```

## 7. Tools (info)

```
apt install neofetch screenfetch -y
```

Used:

**screenfetch** or neofetch


#### initrd:

```
rm -rf /boot/initrd.img ; mkinitramfs -o /boot/initrd.img; \
echo 'initramfs initrd.img followkernel' >>/boot/config.txt; \
cat /boot/config.txt|tail -n1 ;\
sync; sync; reboot
```