This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- trusty' to 'verification-done-trusty'. If the problem still exists, change the tag 'verification-needed-trusty' to 'verification-failed- trusty'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-trusty -- 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/1605494 Title: vmxnet3 LRO IPv6 performance issues (stalling TCP) Status in linux package in Ubuntu: Fix Released Status in linux source package in Trusty: Fix Committed Status in linux source package in Xenial: Fix Released Status in linux source package in Yakkety: Fix Released Bug description: We have performance problems with TCP over IPv6 with SSH/SCP and HTTP traffic on Linux guest virtual machines running on VMware ESXi (6.0u2). We are running Ubuntu 12.04.5 LTS, 14.04.3 LTS and soon 16.04.1 LTS. If we upload (large) files with these protocols the performance go's down to 200kb/s. With IPv4, we have a much higher performance. This is a known issue in the vmxnet3 driver that is fixed upstream on the 21th of April: "This is due to check sum handling issue in the vmxnet3 driver. Fix is on the kernel tree." http://comments.gmane.org/gmane.linux.network/401727 Kernel Patch: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f0d437809d23999cb25207cfbe80c61e5703fdc1 Another example of someone who has this problem: https://lists.debian.org/debian-kernel/2016/03/msg00001.html https://lists.debian.org/debian-kernel/2016/03/msg00002.html ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-61-generic 3.13.0-61.100 ProcVersionSignature: Ubuntu 3.13.0-61.100-generic 3.13.11-ckt22 Uname: Linux 3.13.0-61-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jul 12 14:04 seq crw-rw---- 1 root audio 116, 33 Jul 12 14:04 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory: 'iw' Date: Fri Jul 22 08:05:09 2016 HibernationDevice: RESUME=UUID=4b881d72-9266-45cd-a12f-f21b55fe1ae7 InstallationDate: Installed on 2014-05-08 (805 days ago) InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: VMware, Inc. VMware Virtual Platform PciMultimedia: ProcFB: 0 svgadrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-61-generic root=/dev/mapper/system-root ro RelatedPackageVersions: linux-restricted-modules-3.13.0-61-generic N/A linux-backports-modules-3.13.0-61-generic N/A linux-firmware 1.127.22 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: dmi.bios.date: 09/21/2015 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: 6.00 dmi.board.name: 440BX Desktop Reference Platform dmi.board.vendor: Intel Corporation dmi.board.version: None dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 1 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd09/21/2015:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A: dmi.product.name: VMware Virtual Platform dmi.product.version: None dmi.sys.vendor: VMware, Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1605494/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp