Public bug reported: ### Affected version
- Ubuntu 19.10 - GNOME 3.34.1 - X11 ### Bug summary Downloading a large (60MB) PDF to the desktop causes CPU spikes at regular intervals. Was not able to reproduce when saving it elsewhere (such as `~/Documents`) ### Steps to reproduce [PDF](https://openstax.org/details/books/psychology?Book%20details) This is the PDF I downloaded that presented the issue (it's a free textbook published by OpenStax). 1. Click "Download PDF" 2. Save to the Desktop 3. Verify degraded system performance (see notes below) 4. Delete PDF 5. Verify system performance is no longer degraded ### Relevant logs, screenshots, screencasts etc. The culprit appears to be `createThumbnail.js`. It appears to be stuck in an infinite loop of starting and stopping a new process. This makes it a bit difficult to monitor. The method that worked for me was to run `top -o %CPU`, press `d`, and set the delay to something short like `0.1`. You should see `createThumbnail` continuously flash on and off the top of the list. I tested saving and deleting the PDF repeatedly and there were a couple times when it wouldn't cause the issue. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-shell-extension-desktop-icons 19.10.2-1 ProcVersionSignature: Ubuntu 5.3.0-40.32-generic 5.3.18 Uname: Linux 5.3.0-40-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu8.5 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Mar 16 03:02:52 2020 InstallationDate: Installed on 2020-03-04 (11 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gnome-shell-extension-desktop-icons UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: gnome-shell-extension-desktop-icons (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug eoan ** Attachment added: "CPU usage graph" https://bugs.launchpad.net/bugs/1867585/+attachment/5337441/+files/image.png ** Bug watch added: gitlab.gnome.org/GNOME/gnome-shell/issues #2407 https://gitlab.gnome.org/GNOME/gnome-shell/issues/2407 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell-extension-desktop-icons in Ubuntu. https://bugs.launchpad.net/bugs/1867585 Title: CPU spikes caused by saving PDF to Desktop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-desktop-icons/+bug/1867585/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
