For trex setup we have followed the blog http://scn.sap.com/community/erp/hcm/blog/2010/09/20/setting-up-netweaver-embedded-search-trex-for-sap-ehp4-talent-management
In DEV and QAS it works perfectly. showing the no.of optimized details count as marked in below screen.
But in PRD, it's showing empty details.
Before doing this setup we run the report HR_SYNC_PERSON and did synchronization also.
Still it's showing empty values in PRD for this TREX indexing.