Web Transaction Observer provides this functionality, but it's much more difficult to use. After we had completed a round of testing and waited a few days, we returned to Application Expert and used the comparison feature to examine current performance data against the previously captured data. This feature, not found in ResponseCenter or Web Transaction Observer, is an excellent way to determine where performance problems are occurring over time. While reporting is thorough and provides numerous analytical views of the data, the actual report format is not as desirable as that offered by Web Transaction Observer. The amount of detail, however, is admirable.
Views can drill down to thread analysis or even frames or bits per second.
The Response Time Analysis feature details a transaction by network transmission, client node, Web server, DNS and trailing idle time. This level of granularity is helpful in determining which piece of the complex Web transaction puzzle has the biggest impact on overall response time. And this, in turn, helps you zero in on the cause of poor response times. The entire staff of Network Computing extends their thoughts and prayers to the victims of this nationwide tragedy, their families and friends. Our support also goes to everyone working in the recovery efforts.