Look at the top two items using my CPU in the attached screenshot (systemd-resolve and dnsmasq)
** Attachment added: "systemd-resolve-high-cpu.png" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1666021/+attachment/4822091/+files/systemd-resolve-high-cpu.png -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1666021 Title: zesty systemd-resolve timeout Status in systemd package in Ubuntu: New Bug description: I rebooted my zesty install today so it has network-manager 1.4.4-1ubuntu2 (re-enabled resolved by default for DNS) and systemd 232-17ubuntu1 (which is supposed to fix the CNAME problems that got resolved by default reverted earlier in zesty). I had various DNS issues so I rebooted. When I rebooted, I opened up Firefox and browsed several sites. I opened a terminal and ran sudo apt update. I disabled a PPA and enabled a different PPA and ran sudo apt update then sudo apt dist-upgrade (there were 3 updates). When apt was downloading one of those new packages, it paused mid- download. I was unable to browse sites in Firefox. I ran this command in a different terminal: $ systemd-resolve --status Failed to get global data: Connection timed out I checked journalctl and there was a very large number of these entries: systemd-resolved[3260]: Processing query... Finally followed by this repeated 3 times: dnsmasq[3563]: Maximum number of concurrent DNS queries reached (max: 150) Eventually, after I guess a couple minutes, things returned to normal. The apt upgrade completed. systemd-resolve --status looked better and I'm able to use Firefox again (to report this bug). ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: systemd 232-17ubuntu1 ProcVersionSignature: Ubuntu 4.9.0-15.16-generic 4.9.5 Uname: Linux 4.9.0-15-generic x86_64 NonfreeKernelModules: zfs zunicode zavl zcommon znvpair ApportVersion: 2.20.4-0ubuntu2 Architecture: amd64 CurrentDesktop: GNOME Date: Sun Feb 19 09:54:35 2017 EcryptfsInUse: Yes InstallationDate: Installed on 2016-08-11 (191 days ago) InstallationMedia: Ubuntu-GNOME 16.10 "Yakkety Yak" - Alpha amd64 (20160811) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bus 001 Device 003: ID 04f2:b57e Chicony Electronics Co., Ltd Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 80SA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.9.0-15-generic.efi.signed root=UUID=352e459f-ebca-4dc8-86e3-b078a000910b ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: Upgraded to zesty on 2016-12-20 (60 days ago) dmi.bios.date: 09/26/2016 dmi.bios.vendor: LENOVO dmi.bios.version: 0VCN22WW(V1.06) dmi.board.asset.tag: NO Asset Tag dmi.board.name: Lenovo ideapad F dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo ideapad FLEX 4-1470 dmi.modalias: dmi:bvnLENOVO:bvr0VCN22WW(V1.06):bd09/26/2016:svnLENOVO:pn80SA:pvrLenovoideapadFLEX4-1470:rvnLENOVO:rnLenovoideapadF:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoideapadFLEX4-1470: dmi.product.name: 80SA dmi.product.version: Lenovo ideapad FLEX 4-1470 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1666021/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
