com.day.cq.tagging.impl.TagValidatingEventListener is really lagging my AEM Author, how to fix?

[AEMWizard]

Hi,

After installation of a content package into my AEM author environment (1000 pages), I am getting an abundant number of logs

*INFO* [sling-oak-observation-20] com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at ... 
*INFO* [sling-oak-observation-20] com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at ... 
*INFO* [sling-oak-observation-20] com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at ... 
*INFO* [sling-oak-observation-20] com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at ... 
*INFO* [sling-oak-observation-20] com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at ... 
*INFO* [sling-oak-observation-20] com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at ... 
*INFO* [sling-oak-observation-20] com.day.cq.tagging.impl.TagValidatingEventListener invalid/duplicated tags detected at ... 

This is so bad that my AEM author becomes frozen and very slow. 

What can I do to fix this? What is the best practice to clean up invalid tags... When almost every tag is invalid?

[Jörg_Hoh · Accepted solution]

You should review your tags and clean them up. IIRC there is no automatic way available to do that, but depending on your AEM version you can get a least a hint of a tag is used.

And of course you can extract these invalid/duplicated tags from the log and remove them (either manually or automatically).