File save is very slow under Big Sur, "Listing Dirs..." for minutes #84300
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Reference: blender/blender#84300
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System Information
Operating system:
Graphics card:
Blender Version
2.91.0 2020-11-25 08:34
0f45cab862
Worked: (newest version of Blender that worked as expected)
2.83 worked fine, but under Catalina
Short description of error
Since updating to macOS Big Sur, saving of new files & even opening files has been extremely slow. The status bar indicates "Listing Dirs..." for several minutes before file access proceeds.
Blender also had
com.apple.quarantine
attribute, but removing it didn't fix the slow saving/listing.Exact steps for others to reproduce the error
It happens with Desktop folder. Problem seems related to the OS itself.
Tried giving Full Disk Access, as well as specific folder access to Blender too.
Added subscriber: @RogerMc
Added subscriber: @rjg
Changed status from 'Needs Triage' to: 'Needs User Info'
Does this only happen with 2.91.0 or does 2.83.x have the same issues when used on Big Sur? Are similar issues happening in other applications?
2.83.0 same behavior. I ~have~ dropped all network connectivity so I know it isn't trying to scan attached server drives, Dropbox, etc.
Trouble became noticeable after update to Big Sur.
Blender has folder access enabled, and I have at times tested with full disk access. No difference.
No similar trouble in any other applications.
https://youtu.be/UVPU2VCHzlg
Sorry, had posted the video as private. Changed to make it viewable, so now available.
Added subscriber: @robbott
if you let run the "activity monitor" next to blender do you see a cpu spike on any process ? (make sure you see all processes)
Some suggestions:
No CPU spikes
As mentioned, have removed/added privacy multiple times, no effect. Have provided full disk access as well, no effect.
Issue occurs with or without properly configured network.
~Which~ caches? how?
https://youtu.be/5yNHTiQz9So
After add'l investigation, I've determined that the issue is related to opening/saving files on the desktop (and probably also download) and the relatively new feature to control access to those locations.
But, I've been unable to workaround or resolve the issue by turning off the access and then re-enabling access. Also, allowing full disk access to Blender does not resolve the issue.
Added subscriber: @ankitm
If desktop is synced with some cloud service, try saving to some other folder.
Also, share the output of
xattr -l -r path/to/Blender.app
Issue ~is~ in fact related to desktop and it is synced with DropBox. Saving to other folders works normally.
xattr.txt
Where was Blender downloaded from ?
official site, blender.org
Not sure why it's quarantined.. it can be removed by running
xattr -d -r com.apple.quarantine path/to/Blender.app
Let us know if that gets rid of the slowdown.
xattr -d -r did not resolve issue
and yes, xattr -l -r confirms quarantine is removed. no output from xattr now.
Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'
Sorry, I misspoke. Desktop is NOT synched with Dropbox and has never been.
Removed Blender app using App Zapper, removed entire folder named ~/Library/Application Support/Blender. Rebooted.
Downloaded new copy of Blender 2.91 from org.
After install used xattr and noticed it was installed with quarantine.
Ran xattr again and noticed the quarantine was NOT removed.
System preferences show that Blender has full disk access.
No change to slow behavior when saving to Desktop.
Attempts to open files in Downloads also slow with Listing Dirs ... status.
Desktop is NOT synched to Dropbox, I misspoke, sorry.
Changed status from 'Needs Developer To Reproduce' to: 'Needs Triage'
Added subscriber: @mattli911
I noticed when i was saving a tiny scene just now, about 8MB, to an external m.2 Drive, saving was also slow. About 3-5 seconds at least.
The drive can read/write at about 1GB/s, so is not that. Blender has full permissions as well.
Running latest MacOS Monterey 12.4, on M1 Pro Macbook Pro, with 1TB SSD/16GB Ram.
Edit: Appears to be saving slower, when I have Eevee higher quality settings enabled, but if basic view/solid mode, then savings basically instant.