Just a dumb script, trying to automate some of the easier portions of TCP tuning for long-haul high-latency networks.
This should work well for satellite connections, long-haul fiber (> 1000km) and even local networks for high-speed (>=10gb) interfaces
This script will enable BBR (Bottleneck Bandwidth & RTT) congestion control, as well as the CAKE (Common Applications Kept Enhanced) scheduler (if available)
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USAGE
LatencyFix.sh [--help|-h|--debug|-d|-s|--sysctl] {bandwidth}
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bandwidth can be specified as bare bits, KiB, KB, MiB, MB, GiB, and GB
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commas are optional and will be stripped out
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-s|--sysctl output sysctl statements (defaults to bare values for adding to /etc/sysctl.d)
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No changes will be made to the system, but suggested commands/values will be printed
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EXAMPLES
- $ sudo LatencyFix.sh 10GB
- $ sudo LatencyFix.sh 100MiB
- $ sudo LatencyFix.sh 100,000,000
- $ sudo LatencyFix.sh 1000000
*** put the auto-generated commands into /etc/sysctl.d
- $ sudo LatencyFix.sh 10GB > /etc/sysctl.d/92-latencyfix.conf
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TIPS
- Not seeing any suggestions? You may be all tuned, or over-tuned. Try disabling your existing tuning first!