sysctl.conf

net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_sack = 1
net.ipv4.tcp_no_metrics_save = 1

vm.dirty_ratio = 20
vm.dirty_background_ratio = 10

vm.vfs_cache_pressure = 100
vm.dirty_expire_centisecs = 33000
vm.swappiness = 10

#Alternativo
vm.swappiness = 10
vm.dirty_background_ratio = 50
vm.dirty_ratio = 80