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multipath-tcp / mptcp

⚠️⚠️⚠️ Deprecated 🚫 Out-of-tree Linux Kernel implementation of MultiPath TCP. 👉 Use https://github.com/multipath-tcp/mptcp_net-next repo instead ⚠️⚠️⚠️
https://github.com/multipath-tcp/mptcp_net-next
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changing MPTCP congestion control algorithem by modprobe #444

Closed basrahd closed 2 years ago

basrahd commented 2 years ago

Dear All Can I use the following command modprobe mptcp_olia instead of syctl -w net.ipv4.tcp_congestion_control=olia . If I use modprobe mptcp_olia in mininet host then I issue the command iperf3 to calculate throughput, Does that mean that throughput belongs to olia not to default CCA (cubic)?.

when I use mininet host to change CCA through syctl -w net.ipv4.tcp_congestion_control=olia , I experienced the error ( sysctl: cannot stat /proc/sys/net/ipv4.tcp_congestion_control: No such file or directory). I think that MPTCP works correctly with terminal client in kernel but when I use mininet host I had the above mistake.

Briefly: can I use modprobe mptcp_olia instead of sysctl -w net.ipv4.tcp_congestion_control=olia in mininet host in mininet host?. Best Regards

matttbe commented 2 years ago

Hello,

It seems we forgot about this question. I think you need both: first modprobe to have the cc in net.ipv4.tcp_available_congestion_control (and net.ipv4.tcp_allowed_congestion_control?), then changing sysctl net.ipv4.tcp_congestion_control I guess you need to change the sysctl except maybe if olia is set as the default one somehow?

You can use ss -ti to check which TCP CC is in use.

Do you mind if I close this ticket?

basrahd commented 2 years ago

I appreciate your efforts.

On Mon, 20 Dec 2021 at 17:23, Matthieu Baerts @.***> wrote:

Hello,

It seems we forgot about this question. I think you need both: first modprobe to have the cc in net.ipv4.tcp_available_congestion_control (and net.ipv4.tcp_allowed_congestion_control?), then changing sysctl net.ipv4.tcp_congestion_control I guess you need to change the sysctl except maybe if olia is set as the default one somehow?

You can use ss -ti to check which TCP CC is in use.

Do you mind if I close this ticket?

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