Bug #88033
Updated by Christian Kuhn about 5 years ago
Offending commit: bcde6c0177aba345b0bd363c4519892a132ef279 for https://review.typo3.org/#/c/Packages/TYPO3.CMS/+/59454/ https://forge.typo3.org/issues/87457 Core master has a massive performance issues since #87457, rendering uncached backend close to unusable, especially if xdebug is loaded at the same time. This is obvious if calling backend after clearing caches, and if using the install tool that runs uncached all the time. with xdebug: * install tool first request without patch: 318ms * install tool first request with patch: 1990ms (factor >6) with xdebug: * extension manager with empty caches, without patch: 2800ms * extension manager with empty caches, with patch: 21270ms (thats 20 seconds, factor >7 !!!) without xdebug: * install tool first request without patch: 41ms * install tool first request with patch: 123ms (factor ~2.5) without xdebug: * extension manager with empty caches, without patch: 550ms * extension manager with empty caches, with patch: 1400ms (factor ~2.5)