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francoism90/99-sysctl.conf

Created March 28, 2019 09:27
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  1. francoism90 created this gist Mar 28, 2019.
    29 changes: 29 additions & 0 deletions 99-sysctl.conf
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    Original file line number Diff line number Diff line change
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    # https://docs.continuent.com/tungsten-clustering-5.0/performance-networking.html
    # https://wiki.archlinux.org/index.php/Sysctl
    # https://pubs.vmware.com/continuent/tungsten-replicator-3.0/performance-networking.html
    # https://www.vultr.com/docs/how-to-setup-tcp-optimization-on-linux
    # https://russ.garrett.co.uk/2009/01/01/linux-kernel-tuning/

    fs.file-max = 2097152
    net.core.netdev_max_backlog = 250000
    net.core.somaxconn = 1024
    net.core.rmem_max = 67108864
    net.core.wmem_max = 67108864
    net.ipv4.tcp_rmem = 4096 87380 67108864
    net.ipv4.tcp_wmem = 4096 65536 67108864
    net.ipv4.udp_rmem_min = 8192
    net.ipv4.udp_wmem_min = 8192
    net.ipv4.tcp_fastopen = 3
    net.ipv4.tcp_fin_timeout = 30
    net.ipv4.tcp_max_syn_backlog = 8192
    net.ipv4.tcp_max_tw_buckets = 5000
    net.ipv4.tcp_mtu_probing=1
    net.ipv4.tcp_no_metrics_save = 1
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    vm.dirty_background_ratio = 20
    vm.dirty_ratio = 40
    vm.swappiness = 10
    vm.vfs_cache_pressure = 70