Linux Sysctl VM better settings

linux_sysctl_better_settings.md

Values are for a NVME drive + 20 GB ram :

To put in /etc/sysctl.d/98-vm_usb.conf :

vm.dirty_bytes=419430400
vm.dirty_background_bytes= 209715200
vm.dirty_ratio=2
vm.dirty_background_ratio=1
vm.dirty_writeback_centisecs=250
vm.dirty_expire_centisecs=500
kernel.nmi_watchdog=0
vm.vfs_cache_pressure=75
vm.swappiness=10

then : sudo sysctl -p /etc/sysctl.d/98-vm_usb.conf