I've just confirmed the problem again by trying to transfer a file between Windows 10 and Ubuntu 18.04.1 via samba. Upload speed from Windoes to Ubuntu is 110-115MB/S, while download from Ubuntu to Windows is only 88-90MB/S.
There seems to be another possibly related or unrelated issue. If SAME DIRECTION transfer is initiated from the Ubuntu machine, the download speed to Ubuntu is actually 85MB/s vs 112MB/S if it's initiated from Windows.. that seems to be really weird, but I'm not alone: https://www.reddit.com/r/Ubuntu/comments/82zvm5/weird_issue_file_transfers_slower_from_ubuntu_to/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1802691 Title: Slow send speed with Intel I219-V on Ubuntu 18.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1802691/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs