Public bug reported: Using VisualWorks to check some of my data files. With over 4 million files, manual checking is unreliable and slow. When VisualWorks finds an error I try to use Caja to view the directory and its contents. I clicked the parent directory I wanted (../../../) and waited, and waited, and waited. After 8 minutes I decided that Caja had crashed since every Caja window is frozen. I searched the web for how to kill an app. The Force Quit Button looks very neat, but installing one does not work in MATE. I finally found Alt F2 and xkill which works works.
The only background activity was a Terminal command: cp -anR "/media/robert/4TB Seagate 3/Users" "/media/robert/6TB Seagate 1" which has been running for 3 days and I assume crashed because I see no new directories showing up on the target volume. Apparently Ubuntu MATE 18.04 has a design flaw. It does not handle large external drives well and is slow as continental drift with a 6TB drive mounted. Trying to copy 1 TB onto a 6TB drive takes over 6 days. Copying 3 TB from a 4TB to a 4TB takes only two days. This is an obvious design scale defect. (An algorithm which works with a small set of data may not work acceptably with a large set of data.) Please have the developers examine their design and find out where the flaw is. Have them plug in a 12 TB external USB 3 drive (the largest commonly available size for desktop computers ) and see incredible slowdown. (Using Caja to view a directory may take over 3 minutes to show 247 files.) ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: caja 1.20.2-4ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18 Uname: Linux 4.15.0-38-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 CurrentDesktop: MATE Date: Thu Nov 15 02:57:24 2018 ExecutablePath: /usr/bin/caja InstallationDate: Installed on 2018-10-25 (21 days ago) InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: caja UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: caja (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1803507 Title: Caja crashes when trying to view a parent directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/caja/+bug/1803507/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs