[main]
summary=Optimize for PostgreSQL RDBMS
include=throughput-performance
[sysctl]
vm.swappiness = 10
vm.dirty_background_ratio = 10
vm.dirty_ratio = 40
vm.dirty_expire_centisecs = 3000
vm.dirty_writeback_centisecs = 500
kernel.shmmax = 18446744073692700000
kernel.shmall = 18446744073692700000
kernel.shmmni = 4096
kernel.sem = 250 512000 100 2048
fs.file-max = 312139770
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 2048 65499
# Permits sockets in the time-wait state to be reused for new connections:
net.ipv4.tcp_tw_reuse = 1
net.core.netdev_budget = 1024
net.core.netdev_max_backlog = 2048
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
kernel.panic_on_oops = 1
# We don't need NUMA balancing in this box:
kernel.numa_balancing = 0
# Used if not defined by the service:
net.core.somaxconn = 4096
# Other parameters to override throughput-performance template
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216
net.ipv4.tcp_window_scaling = 1
net.netfilter.nf_conntrack_max = 250000
net.ipv4.tcp_max_syn_backlog=4096
[vm]
transparent_hugepages=never