We believe we have traced the cause of Monday and Tuesday's periodic performance issues with Blackboard and that the issue has been resolved.
Beginning just before noon on Monday, May 18, an issue with a database indexing task caused both Blackboard servers to temporarily spike CPU usage. The end result was that users during this time may have experienced Blackboard running much more slowly than normal. This issue reappeared at regular intervals roughly every three hours through the rest of Monday and much of Tuesday. Each episode lasted approximately 30 minutes. The rest of the time Blackboard performed normally.
Throughout Monday and Tuesday, TLT worked with Blackboard support to isolate the issue and craft a fix as quickly as possible. Our first attempt to apply a fix for this issue Tuesday afternoon was unsuccessful and resulted in down time between 3:20 and 4:49 pm. The second attempt to apply the fix at 8:30 pm Tuesday night was successful. We have seen no sign of the issue since that time.
Thank you again for your patience during this busy time of the year as we worked to resolve this issue. TLT monitors the performance of Blackboard and our other critical systems 24/7 towards the goal of minimizing all disruptions for our faculty and students. Our goal is always to restore each system to peak performance as quickly as possible.