Did this work correctly in previous 4.15.0 kernels? -- 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/1832641
Title: 4.15.0-46-generic doesn't support ethtool adaptive-tx for mlx5 card Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu Bionic 18.04 LTS: We found that default bionic kernel 4.15.0-46-generic doesn't support ethtool -C adaptive-tx Our ethernet card is Mellanox Connect4-Lx and Connect5, and this will affect performance of latency sensitive workloads like memcached. Maybe we should backport adaptive-tx support to kernel 4.15 LTS? Xeon Skylake 8168 x86_64: ubuntu kernel 4.15.0-46-generic eth: mlx5 connect-5 ethtool doesn't support adaptive-tx (ethernet TX interrupt coalesce) X-Gene3 aarch64: ubuntu kernel 4.18.0-16-generic, eth: mlx5 connect-4lx ethtool supports adaptive-tx (ethernet TX interrupt coalesce) Same Xeon Skylake 8168 x86_64 latest kernel 5.2.0-rc2 eth: mlx5 connect-5 ethtool supports adaptive-tx (ethernet TX interrupt coalesce) --- ProblemType: Bug AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jun 12 14:42 seq crw-rw---- 1 root audio 116, 33 Jun 12 14:42 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.6 Architecture: arm64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: DistroRelease: Ubuntu 18.04 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' MachineType: AmpereComputing(R) OSPREY EV-883832-X3-0001 Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=C.UTF-8 SHELL=/bin/bash ProcFB: 0 astdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-16-generic root=UUID=698f489c-124b-4ebb-b6c3-14c8b82c978d ro console=ttyAMA0,115200 iommu.passthrough=1 ProcVersionSignature: Ubuntu 4.18.0-16.17~18.04.1-generic 4.18.20 RelatedPackageVersions: linux-restricted-modules-4.18.0-16-generic N/A linux-backports-modules-4.18.0-16-generic N/A linux-firmware 1.173.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' Tags: bionic uec-images Uname: Linux 4.18.0-16-generic aarch64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 09/25/2018 dmi.bios.vendor: Ampere(TM) dmi.bios.version: 4.8.19 dmi.board.asset.tag: APCX3A1-A526-16050501200016 dmi.board.name: OSPREY dmi.board.vendor: AmpereComputing(R) dmi.board.version: EV-883832-X3-OD1-2 dmi.chassis.asset.tag: APCX3A1-A526-16050501200016 dmi.chassis.type: 23 dmi.chassis.vendor: AmpereComputing(R) dmi.chassis.version: APCA1A1-00000000 dmi.modalias: dmi:bvnAmpere(TM):bvr4.8.19:bd09/25/2018:svnAmpereComputing(R):pnOSPREYEV-883832-X3-0001:pvrPR010:rvnAmpereComputing(R):rnOSPREY:rvrEV-883832-X3-OD1-2:cvnAmpereComputing(R):ct23:cvrAPCA1A1-00000000: dmi.product.family: eMAG dmi.product.name: OSPREY EV-883832-X3-0001 dmi.product.sku: EV-883832-X3-OBX-1 dmi.product.version: PR010 dmi.sys.vendor: AmpereComputing(R) --- ProblemType: Bug AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jun 12 15:22 seq crw-rw---- 1 root audio 116, 33 Jun 12 15:22 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: DistroRelease: Ubuntu 18.04 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 1604:10c0 Tascam Bus 001 Device 003: ID 1604:10c0 Tascam Bus 001 Device 002: ID 1604:10c0 Tascam Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. PowerEdge R640 Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=C.UTF-8 SHELL=/bin/bash ProcFB: 0 mgadrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-46-generic root=UUID=cc79d3b3-63ee-450d-84ff-ddd80ab73c80 ro intel_pstate=disable console=ttyS0,115200n8 ProcVersionSignature: Ubuntu 4.15.0-46.49-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-46-generic N/A linux-backports-modules-4.15.0-46-generic N/A linux-firmware 1.173.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' Tags: bionic uec-images Uname: Linux 4.15.0-46-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 05/21/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.4.8 dmi.board.name: 0W23H8 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.4.8:bd05/21/2018:svnDellInc.:pnPowerEdgeR640:pvr:rvnDellInc.:rn0W23H8:rvrA00:cvnDellInc.:ct23:cvr: dmi.product.family: PowerEdge dmi.product.name: PowerEdge R640 dmi.sys.vendor: Dell Inc. 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