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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1802691 Title: Slow send speed with Intel I219-V on Ubuntu 18.04.1 Status in linux package in Ubuntu: Confirmed Bug description: Testing with iperf3 send speed is only 750mbps while receive speed is normal - 940mbps. Ubuntu 18.04.1 Msi b250m mortar --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: django 1016 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2018-11-09 (6 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) IwConfig: enp0s31f6 no wireless extensions. lo no wireless extensions. Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: MSI MS-7A69 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-39-generic root=UUID=991b4393-3308-4615-97c8-9854b3bdc67e ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-39-generic N/A linux-backports-modules-4.15.0-39-generic N/A linux-firmware 1.173.1 RfKill: Tags: bionic Uname: Linux 4.15.0-39-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/29/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: A.60 dmi.board.asset.tag: Default string dmi.board.name: B250M MORTAR ARCTIC (MS-7A69) dmi.board.vendor: MSI dmi.board.version: 2.0 dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 2.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrA.60:bd06/29/2018:svnMSI:pnMS-7A69:pvr2.0:rvnMSI:rnB250MMORTARARCTIC(MS-7A69):rvr2.0:cvnMSI:ct3:cvr2.0: dmi.product.family: Default string dmi.product.name: MS-7A69 dmi.product.version: 2.0 dmi.sys.vendor: MSI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1802691/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
