Today's hardware architectures provide an ever-increasing number of CPU cores that can be used for running concurrent operations. A big challenge is to ensure that these operations are properly synchronized and make efficient use of the available resources. Fellow database researchers have appropriately described this problem as "staring into the abyss" of complexity [12], where reasoning about the interplay of jobs on a thousand cores becomes extremely challenging. In this demonstration, we show how a new tool, JexLog, can help to visually analyze concurrent jobs in system software and how it is used to optimize for modern hardware.

QE3D is a novel query plan visualization tool that aims at providing an intuitive and holistic view of distributed query plans executed by the SAP HANA database management system. In this demonstration, we show how its interactive, three-dimensional plan representation helps to understand and quickly identify hotspots in complex, real-world scenarios.