Every 2-3 years, the Fachgruppe Betriebssysteme organizes a Winter School for interested PhD and Master students. This year, co-organized by Christian Dietrich, the Winter School attracted over 40 participants (among them Pasha Fistanto) to Schloss Zell an der Pram, Austria. In a five day program, 15 speakers gave 8 academic lectures, 4 industry lectures, and 3 hands-on sessions. There was a lot of exciting discussions and new impulses for future collaboration.
Die Arbeitsgruppe Reliable System Software sucht neue Mitarbeiter Details gibt es in der Stellenausschreibungen. Bei Fragen könnt ihr euch direkt an Christian Dietrich wenden.
In our paper, HyperAlloc: Efficient VM Memory De/Inflation via Hypervisor-Shared Page-Frame Allocators, presented at the renowned EuroSys conference, we address a major challenge in virtualization—provisioning the right amount of DRAM to virtual machines (VMs). Many VMs face highly volatile memory demands, leading to either overprovisioning or poor quality of service during peak demand. While techniques like memory hotplugging and ballooning exist, they often fail to be DMA-safe or flexible enough.
We introduce HyperAlloc, a DMA-safe memory reclamation technique that significantly accelerates VM de/inflation, shrinking virtual machines up to 362 times faster the state of the art. HyperAlloc’s automatic memory reclamation also reduces the average memory footprint of a virtual machine by 17% compared to existing methods.