Speedify cli tweaks

gistfile1.txt

rodbourn — 01/14/2024 11:10 AM (speedify discord)

Some more awesome sauce:

making the following kernel tweaks has helped dramatically on the uplink bonding... i have a 1000/1000 fiber, and 1000/35 cable connection, and the uplink reaching near 1000 is the challenge (first world problems, but a fun problem to look at!).

net.ipv4.tcp_congestion_control=bbr
net.ipv4.tcp_slow_start_after_idle=0

# Increase TCP maximum buffer size
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216

# Increase Linux autotuning TCP buffer limits
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216

# Enable TCP Window Scaling
net.ipv4.tcp_window_scaling = 1

# Enable TCP Timestamps
net.ipv4.tcp_timestamps = 1

# Enable Selective Acknowledgements
net.ipv4.tcp_sack = 1

# Enable FACK congestion avoidance algorithm
net.ipv4.tcp_fack = 1

# Increase the length of the processor input queue
net.core.netdev_max_backlog = 50000

# Increase the TCP maximum and default buffer sizes using setsockopt()
net.core.optmem_max = 25165824

# Increase number of incoming connections
net.core.somaxconn = 4096

# Increase number of incoming connections backlog
net.ipv4.tcp_max_syn_backlog = 20480

net.ipv4.tcp_fastopen = 1
net.ipv4.tcp_fastopen_key = 00000000-00000000-00000000-00000000

net.ipv4.tcp_tw_reuse = 1


$ ./speedify_cli speedtest
[
        {
                "city" : "",
                "country" : "privateus",
                "downloadSpeed" : 1683899220.1679666,
                "isError" : false,
                "latency" : 15,
                "numConnections" : 2,
                "time" : 1705259084,
                "type" : "speed",
                "uploadSpeed" : 907825157.41193759
        }
]
$ ./speedify_cli show settings
{
        "allowChaChaEncryption" : true,
        "bondingMode" : "speed",
        "downstreamSubnets" : [],
        "enableAutomaticPriority" : true,
        "enableDefaultRoute" : true,
        "encrypted" : true,
        "forwardedPorts" : [],
        "headerCompression" : false,
        "jumboPackets" : true,
        "overflowThreshold" : 2500.0,
        "packetAggregation" : true,
        "perConnectionEncryptionEnabled" : false,
        "perConnectionEncryptionSettings" : [],
        "perConnectionParallelSockets" :
        [
                {
                        "adapterID" : "all",
                        "sockets" : 4
                }
        ],
        "priorityOverflowThreshold" : 2500.0,
        "startupConnect" : true,
        "transportMode" : "tcp-multi",
        "ulpReportIntervalSeconds" : 900
}
I think BBR has the biggest impack 🤷‍♂️