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using a custom build from today (trunk except for core/windows from branch) I did a commit, cannot recal doing anything else but the CPU usage stayed at 100 percent for a few minutes and still there. I created a few thread dump, and the only longer stacktraces come from masterfs+vcs no idea who is the culprit though. threadumps attached.
Created attachment 15006 [details] several threaddumps within approx 30 seconds
This is caused by an excessive refreshing of filesystems. The real cause of the refreshes is not apparent from the thread dumps. I suppose that this is already fixed, I did not encounter this behavior in recent builds.
Hopefully fixed. If not, please reopen.