In the cluster-mode, this menu item is only enabled on the node where the search-service is running. There are 6 sections :
Indexer Status : Status of current running index or status of last run since OLAT start.
Index Status : Status of current used index.
Search Status : Number of search queries since OLAT start.
Start/Stop Index : Start or stop indexer. The index-interval parameter can be overwritten to reduce CPU load.
Number of indexed elements per document-type : During indexing each OLAT document-type will be counted e.g. 'type.group'.
Number of indexed elements per file-type : Number of indexed HTML, PDF, Text , Word, Excel and Power-point files.