I have been running some comparative tests between distro's on a Thinkpad T450S with a i5-5300U and I think this is related to CPU throttling.
The issue seems to occur on: - Ubuntu 18.04 (5.0.0 stock kernel) - Ubuntu 19.10 (5.3 stock kernel) - OpenSUSE Tumbleweed (5.3 stock kernel) But not on OpenSUSE 15.1 Leap (4.12.14 stock kernel) I have installed the mainline 4.12.14 kernel on Ubuntu 18.04 but that gives me the same issues. What I have noticed however is that 18.04, 19.10 and Tumbleweed all try to throttle the CPU, and during file copy the CPU frequency never gets above 1Ghz. OpenSUSE Leap however has a much more lax throttling policy and never dips below 2Ghz, even when the laptop is running on battery. I have checked the CPU frequency with `cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq`. Also this tool might give some valuable insight: https://github.com/amanusk/s-tui I find that running a stresstest with that tool (or stress-ng, which with it integrates) seem to eradicate the issue (because the CPU frequency is kept unthrottled while running a stresstest). If anyone has some ideas for tests I can do, please let me know. I have a spare SSD that I can pop in the laptop so it shouldn't be that big of a deal reinstalling the OS. -- 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/1208993 Title: Ubuntu slows down and hangs while copying file from/to USB Status in linux package in Ubuntu: Confirmed Bug description: Hi While copying many and large files to and from a USB drive, the system becomes incredibly slow and sometimes hangs. I watched the system monitor while it was running slowly but cpu was not above 50% at any time, the same for memory. I'm using the "WD my passport" HD with a USB3 port of my "ASUS K55VD" laptop. Description: Ubuntu 13.04 Release: 13.04 nautilus: Installed: 1:3.6.3-0ubuntu16 Candidate: 1:3.6.3-0ubuntu16 Version table: *** 1:3.6.3-0ubuntu16 0 500 http://ubuntu-archive.mirror.nucleus.be/ raring/main amd64 Packages 100 /var/lib/dpkg/status Steps to reproduce: 1) Aquire many large files (like your totally legit moviecollection) 2) Copy files to external HD 3) Open your browser and be sad when your system becomes incredibly slow after a few minutes This is my first bugreport so if I'm missing something, please tell me. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: nautilus 1:3.6.3-0ubuntu16 ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4 Uname: Linux 3.8.0-27-generic x86_64 ApportVersion: 2.9.2-0ubuntu8.1 Architecture: amd64 Date: Tue Aug 6 22:56:34 2013 EcryptfsInUse: Yes ExecutablePath: /usr/bin/nautilus GsettingsChanges: b'org.gnome.nautilus.window-state' b'geometry' b"'656x715+154+151'" b'org.gnome.nautilus.window-state' b'maximized' b'true' InstallationDate: Installed on 2013-05-31 (67 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MarkForUpload: True SourcePackage: nautilus UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1208993/+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
