This concerns the typo3 v9 main page tree in the backend view.
I have a very large page tree with about 20.000 page entities . The query takes a long time...
In my Typo3 v9.5.5 environment, the data is retrieved in a single slow query .
How can Typo3 build the page tree in several fast queries level by level?
In the older Typo3 version (8.7.24) this also works with the method getNextTreeLevel() I think.
The core team is working on it. There are 2 patches pending: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62329 - this patch makes page tree less bandwidth
https://review.typo3.org/c/Packages/TYPO3.CMS/+/62086 - this adds asynchronous tree rendering (it's a work in progress, as needs some tuning regarding workspaces support)
The new behaviour is like this by design in TYPO3 9.
There is a slack-channel discussing that issue: https://typo3.slack.com/messages/CK20S7EKS
And a bug-ticket on forge: https://forge.typo3.org/issues/88474
Out of that there will come a patch for the core.
The only help for now is the extensions: https://github.com/bueroparallel/bp_pagetree (discussed and reviewed in the slack channel). This speed up the tree load but just loads up to a defined nesting level what results in not all pages are automatic included in the filter results. But for now (and hopefully just for a small time period) the best solution!
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