I have a significant memory leak after upgrading from previous 4.10 series HWE kernels to the new 4.13 HWE series for Ubuntu 16.04 server with Ethernet controller Intel X710 for 10GbE SFP+
# dmesg | grep i40e [ 1.625565] i40e: Intel(R) Ethernet Connection XL710 Network Driver - version 2.1.14-k [ 1.625565] i40e: Copyright (c) 2013 - 2014 Intel Corporation. [ 1.688509] i40e 0000:02:00.0: fw 5.40.47690 api 1.5 nvm 5.40 0x80002d35 18.0.17 [ 1.959126] i40e 0000:02:00.0: MAC address: 3c:fd:fe:1a:1d:e0 [ 2.060021] i40e 0000:02:00.0: PCI-Express: Speed 8.0GT/s Width x4 [ 2.060091] i40e 0000:02:00.0: PCI-Express bandwidth available for this device may be insufficient for optimal performance. [ 2.060096] i40e 0000:02:00.0: Please move the device to a different PCI-e link with more lanes and/or higher transfer rate. [ 2.085931] i40e 0000:02:00.0: Features: PF-id[0] VFs: 64 VSIs: 66 QP: 8 RSS FD_ATR FD_SB NTUPLE DCB VxLAN Geneve PTP VEPA [ 2.140793] i40e 0000:02:00.1: fw 5.40.47690 api 1.5 nvm 5.40 0x80002d35 18.0.17 [ 2.422817] i40e 0000:02:00.1: MAC address: 3c:fd:fe:1a:1d:e2 [ 2.442684] i40e 0000:02:00.1: PCI-Express: Speed 8.0GT/s Width x4 [ 2.442696] i40e 0000:02:00.1: PCI-Express bandwidth available for this device may be insufficient for optimal performance. [ 2.442715] i40e 0000:02:00.1: Please move the device to a different PCI-e link with more lanes and/or higher transfer rate. [ 2.443043] i40e 0000:02:00.1: Features: PF-id[1] VFs: 64 VSIs: 66 QP: 8 RSS FD_ATR FD_SB NTUPLE DCB VxLAN Geneve PTP VEPA [ 2.480205] i40e 0000:02:00.0 enp2s0f0: renamed from eth1 [ 2.512183] i40e 0000:02:00.1 enp2s0f1: renamed from eth0 [ 5.800514] i40e 0000:02:00.0 enp2s0f0: NIC Link is Up, 10 Gbps Full Duplex, Flow Control: None ** Attachment added: "201802_nperf_memory-week.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748408/+attachment/5063316/+files/201802_nperf_memory-week.png -- 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/1748408 Title: Servers going OOM after updating kernel from 4.10 to 4.13 Status in linux package in Ubuntu: Triaged Status in linux source package in Artful: Triaged Bug description: We are seeing this on multiple servers after upgrading from previous 4.10 series HWE kernels to the new 4.13 HWE series. With the new kernel, free memory is continously decreasing at a high rate and the servers start swapping and finally OOMing services within days. With the 4.10 kernel, decrease of free memory is slower and stabilizes after a while. Latest kernel tested is linux-image-4.13.0-32-generic but the issue also affects older kernels from that series, tested back to linux- image-4.13.0-19-generic. No issue with linux-image-4.10.0-42-generic. The servers are running as OpenStack controller nodes using either Ocata or Pike UCA plus ceph. See attached graph for the memory behaviour. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.13.0-32-generic 4.13.0-32.35~16.04.1 ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13 Uname: Linux 4.13.0-32-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 Date: Fri Feb 9 09:45:50 2018 ProcEnviron: LANGUAGE=en_US: TERM=screen PATH=(custom, no user) LANG=en_US.utf8 SHELL=/bin/bash SourcePackage: linux-hwe UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748408/+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
