mirror of
https://github.com/safing/portmaster
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45 lines
1.3 KiB
Text
45 lines
1.3 KiB
Text
## Kernel Optimizations for few very high bandwidth connections.
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# Quickly with this:
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# curl -fsSL https://updates.safing.io/internal/sysctl.conf > /etc/sysctl.d/9999-spn-network-optimizing.conf
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# cat /etc/sysctl.d/9999-spn-network-optimizing.conf
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# sysctl -p /etc/sysctl.d/9999-spn-network-optimizing.conf
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# Provide adequate buffer memory.
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# net.ipv4.tcp_mem is in 4096-byte pages.
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net.core.rmem_max = 1073741824
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net.core.wmem_max = 1073741824
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net.core.rmem_default = 16777216
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net.core.wmem_default = 16777216
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net.ipv4.tcp_rmem = 4096 16777216 1073741824
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net.ipv4.tcp_wmem = 4096 16777216 1073741824
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net.ipv4.tcp_mem = 4194304 8388608 16777216
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net.ipv4.udp_rmem_min = 16777216
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net.ipv4.udp_wmem_min = 16777216
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# Enable TCP window scaling.
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net.ipv4.tcp_window_scaling = 1
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# Increase the length of the processor input queue
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net.core.netdev_max_backlog = 100000
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net.core.netdev_budget = 1000
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net.core.netdev_budget_usecs = 10000
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# Set better congestion control.
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net.ipv4.tcp_congestion_control = htcp
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# Turn off fancy stuff for more stability.
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net.ipv4.tcp_sack = 0
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net.ipv4.tcp_dsack = 0
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net.ipv4.tcp_fack = 0
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net.ipv4.tcp_timestamps = 0
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# Max reorders before slow start.
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net.ipv4.tcp_reordering = 3
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# Prefer low latency to higher throughput.
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# Disables IPv4 TCP prequeue processing.
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net.ipv4.tcp_low_latency = 1
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# Don't start slow.
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net.ipv4.tcp_slow_start_after_idle = 0
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