Thunar maxes out CPU

Not sure exactly what is causing this, but thunar in conjunction with gvfsd-metadata randomly maxes out my CPU and RAM. This time it happened when I was in a folder with 2 xslx, 2 ods and 2 pdf files. I have thumbnails set to 'Never'.

Which thunar versions did you try ?

Did you use tree-view ? (Which was known for such issues in the past)

Without a reproducer, there is not much hope to get something like that fixed.

added 3. Need Info label

mentioned in issue panel-plugins/xfce4-systemload-plugin#9

Thunar: 1.8.13git-43aa19aa Tree View: yes, though as the thumbnails are rendered in the file/folder pane, the view shouldn't matter

Is there some means for me to run thunar in a particular mode that would track what is being done and once it triggers the massive CPU spikes I can kill the process and submit the results.

Thunar: 1.8.13git-43aa19aa

So that is one month old master ? (Sorry, no idea how to check to which branch that commit belongs to)

• Does it as well happen with current master ?
• Does it as well happen with bookmark-view ?

though as the thumbnails are rendered in the file/folder pane, the view shouldn't matter

What makes you think that it is related to thumbnails ?

Is there some means for me to run thunar in a particular mode that would track what is being done and once it triggers the massive CPU spikes I can kill the process and submit the results.

Nope, there is no such thing :/

As I have libxfce4ui 4.15.0 from a PPA, I can't build newer versions of thunar due to this change.

• I can't run current master, so no idea
• This bug is irrelevant to whether its bookmark or tree view, as thumbnails are rendered in the file/folders pane and not sidebar pane.

What makes you think that it is related to thumbnails ?

You mentioned on IRC "Test with/without thumbnailer, delete generated thumbnails to check if thunar or tumbler is to blame." when i mentioned the issue happened in a folder with gimp .xcf files in it. https://imgur.com/raTiMeV.png

So it happened to me again yesterday and I think i've figured out somewhat where this is stemming from. I have various folders on my desktop folder that are symlinked to folders on my previous desktop and I noticed this time that when I opened the symlinked folder ( ~/Desktop/IOU symlinked to /home/jay/Desktop/IOU/ ) and then moved into one of its subfolder and then moved back to it, that the contents of the folder took forever to appear. Soon after that, the CPU spike happened. I tried different methods to try and create reproducible steps, but haven't been able to yet, but believe this is likely the cause that Thunar is having problems with.

ok, well ..- please just let us know when you know a way to reproduce.

On my Xubuntu 20.04, Thunar sometimes goes in a loop somewhere consuming 100% of a CPU core until killed. Haven't tried gdb so far. I don't know steps to reproduce but will try @philipzae 's hints. I also often enter directories through symlink, so it might indeed be the same issue. I have recently installed some dbgsym packages to get a stack trace for this bug I've created: xfwm4#405 . Willing to do the same for Thunar if useful. Thank you for your attention.

Thanks for reporting @stephane.gourichon !

A backtrace or a reproducer would be nice. Without that, I cant help much.

Which thunar version is used in xubuntu 20.04 ? Only happens when tree-view is used ?

Xubuntu is using 1.8.14.

Xubuntu is using 1.8.14.

ok, thanks!

There is a good chance that both of you suffer either from this bug or from this bug, both fixed in thunar 1.8.15 (or 4.15.1)

So could you please install 1.8.15 or 4.15.1 and test if you can reproduce the bug there ?

Though Xubuntu is using 1.8.14, I am running a git build from May ( 1.8.13git-43aa19aa ) which include both patches. I've upgraded to 1.8.15 as it is available in the PPA and will see if it still happens.

Sooo, did it happen again ? Or can this bug be closed ?

added 1. Performance 5. Side Pane - Tree labels

No reply, so I assume it did not happen again, since it was fixed meanwhile.

Feel free to reopen if I am wrong !

closed

Hi! Sorry for not responding to your comment one month ago, been very busy.

Yes, I have experienced at least one time when Thunar consumed 100% CPU in the last month and I had to kill it. Currently using 1.8.15 . I'm not 100% sure it's the same bug reported here.

Steps to reproduce: not reproducing

I have tested @philipzae 's test procedure on #327 (comment 12329) and could not reproduce any problem.

I do not display icons on the desktop, but there is something common with @philipzae 's hints, as I often open symlinks to other filesystems.

Vague hints

My feeling is that the bug I experience is related to computing or displaying thumbnails, but it's not proven.

Next steps

Not reopening this issue for the sake of reducing noise. If/when I get some more specific information, I will reopen here or another bug or report a new one, depending on the observed facts.