RETIT is official sponsor of the Symposium on Software Performance 2021 in Leipzig! The goal of the Symposium on Software Performance is to exchange experiences in the field of software performance. The official description of the event can be taken from here:

The Symposium on Software Performance (SSP) brings together researchers and practitioners interested in software performance, where “performance” is understood both in a classical sense as “the amount of useful work accomplished by a software system compared to the time and resources used”, as well as in a broader sense as “the manner in which or the efficiency with which a software system reacts or fulfills its intended purpose”. The scope of SSP spans measurement, modeling, benchmark design, and run-time management. The focus is both on classical performance metrics such as response time, throughput, and resource utilization, as well as on the relationship of such metrics to other software quality attributes including but not limited to scalability, elasticity, (energy) efficiency, dependability (in terms of availability and reliability), resilience, security, and privacy. Topics of interest include the design of metrics, benchmarks, and tools for quantitative system evaluation and analysis, as well as the development of methodologies, techniques and tools for modeling, measurement, load testing, monitoring, profiling, workload characterization, and run-time management of software systems with respect to the mentioned quality attributes.

The symposium is organized by the three established research groups Descartes, Kieker, and Palladio; thus this symposium also serves as a joint community meeting. Descartes’ focus are techniques and tools for engineering self-aware computing systems designed for maximum dependability and efficiency. Kieker is a well‐established tool and approach for monitoring software performance of complex, large, and distributed IT systems. Palladio is a likewise‐established tool and approach for modeling architectures of IT systems and for simulating quality properties, such as for example performance or reliability metrics.

For this symposium, we are happy to announce a speaker of our own. Denis Angeletta will share his experience evaluating the impact of reactive libraries on software performance.

Investigating the Performance of Reactive Libraries in a Quarkus Micro-Service
Denis Angeletta (RETIT)

What’s the performance benefit of using reactive libraries in my Java applications? Can I go step-by-step, or do I need to go all-in and refactor the whole code to gain performance benefits of these reactive libraries? If you are dealing with similar questions, this talk is for you! In this talk, we will review different refactoring options for a Quarkus-based REST service using frameworks such as RESTEasy Reactive, Hibernate reactive and Mutiny from a performance perspective.

For more information about the program and registration, check out the official website:

We are looking forward to meeting you there!