during testing, i see deletions of resource operation histories with moderately sized results on the order of 11-12 seconds each. when i selected an entire page of histories to delete (15 of them), the time skyrocketed (consistently) to 240 seconds. it should be sub-second to delete a single record, and approximately linear to delete multiple ones in the same UI action.
rev2369 - improve speed of resource operation history removals by batch deleting the associated configuration and property entities; post-analysis showed an average deletion time (using the same exact operation histories as this issue was opened against) in the 480ms range. selecting and deleting 15 resource operation histories at a time was in the 6-7 second range.
This bug was previously known as http://jira.rhq-project.org/browse/RHQ-1260 This bug is related to RHQ-1285