> a) On theory it compromises the throughput (the whole CPU time that will take > for a > process to finish will be longer) for better responsiveness, even under high > load. So > mouse clicks/UI events should be handled faster and say, when decompressing > large files > or other CPU load by specific process the user interface should not freeze.
err, nope ... it will prioritize processes differently (the preemption model is completely different) and is not actually optimized for desktop style performance, i'd really go back to the generic kernel here (we'd ship the lowlatency kernel by default on the desktop images if it would actually behave like you describe ;) ) -- 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/1898869 Title: System slow on booting Status in snapd package in Ubuntu: New Status in systemd package in Ubuntu: Invalid Bug description: I have installed a Kubuntu 20.04.1 for my grandma, the system is slow to boot, takes between a minute 30 seconds to two minutes to display the Plasma Desktop. I am attaching a journalctl log and a systemd- bootchart img. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60 Uname: Linux 5.4.0-48-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.11-0ubuntu27.9 Architecture: amd64 CasperMD5CheckResult: skip CompositorRunning: None Date: Wed Oct 7 15:26:27 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu DkmsStatus: bcmwl, 6.30.223.271+bdcom, 5.4.0-42-generic, x86_64: installed bcmwl, 6.30.223.271+bdcom, 5.4.0-48-generic, x86_64: installed ExtraDebuggingInterest: No GraphicsCard: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0c) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Atom Processor Z36xxx/Z37xxx Series Graphics & Display [1043:14dd] InstallationDate: Installed on 2020-09-22 (14 days ago) InstallationMedia: Kubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 04f2:b404 Chicony Electronics Co., Ltd USB2.0 HD UVC WebCam Bus 001 Device 003: ID 04ca:2006 Lite-On Technology Corp. Broadcom BCM43142A0 Bluetooth Device Bus 001 Device 002: ID 1c4f:0034 SiGma Micro Usb Mouse Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. X551MA ProcEnviron: LANGUAGE=ru:en_US TERM=xterm-256color PATH=(custom, no user) LANG=bg_BG.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic root=/dev/mapper/vgkubuntu-root ro quiet splash init=/lib/systemd/systemd-bootchart vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/15/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X551MA.515 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X551MA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX551MA.515:bd04/15/2015:svnASUSTeKCOMPUTERINC.:pnX551MA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX551MA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: X dmi.product.name: X551MA dmi.product.sku: ASUS-NotebookSKU dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.101-2 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1898869/+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
