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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:

temp_limit=85
temp_soft_limit=85
arm_freq=1200
over_voltage=6

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

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

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