After a Windchill system is restarted the first user(s) accessing the system can experience slower performance for some actions while numerous Windchill caches are being populated. These caches could be pre-populated before users started using the system again by using the Apache 'ab' utility found in the Apache/bin directory.
The usage is: ab -A user:pass "URL"
Where URL can be any Windchill. When Windchill is using SSL the 'abs' utility should be used instead.