TYPO3 Core

In a customer project with extensive use of workspaces there have been many pages and of course content elements with pid = -1. After upgrading from Typo3 4.5 to 6.2 it takes pretty much time to create new content elements within a workspace. By the help of profiling we found out that clearing the cache takes most time in the process. It is initiated by TYPO3\CMS\Core\DataHandling\DataHandler->process_datamap() (which is called by TemplaVoila). As a workaround we deleted all pages and content elements with pid = -1. With the disadvantage of losing the history and that the system will slow down again, when the amount of pages with pid = -1 grows.