I'm seeing similar behavior on multiple physical hosts running 4.15.0-36-generic. The TCP window size only appears to grow very slightly (from initial of 224 to around 1400) during the entire length of the transfer.
Downgrading to 4.15.0-34-generic fixes the issue for me - TCP window size continues to grow until it is around 24k. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1796895 Title: Kernel 4.15.0-36 network performance regression To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796895/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
