ObsBox: a Linux-based real-time system for LHC beam monitoring

At the Large Hadron Collider (LHC) at CERN, Geneva, Switzerland, the radiofrequency and transverse damper feedback systems digitize beam phase and position measurements for beam studies. The “observation box” (ObsBox) diagnostic system parasitically captures data...

Overview of SD/eMMC their high speed modes and Linux support

SD and eMMC devices are widely present on Linux systems and became on some products the primary storage medium. One of the key feature for storage is the speed of the bus accessing the data. Since the introduction of the original “default” (DS) and “high speed” (HS)...

Packets probes and eBPF filtering in Skydive

Efficient monitoring of large-scale networks poses a delicate balance between capture granularity on the one hand and the imposed overheads and performance penalties on the other. Skydive is an open source real-time network topology and protocol analyzer, featuring...

Qemu in UEFI

UEFI is a firmware specification created by Intel with portability in mind. The UEFI way of doing that was to provide special UEFI byte code (EBC). Unfortunately nobody really cared so compiler, firmware support and providers of EBC option roms ceased and basically...

State of CPU Isolation

The kernel is great at doing its job for your task, providing unified access to hardware, filesystem, network, scheduling your code when you need to, … But can’t it all be done quietly please, because your application is sensitive to headaches and is having a hard...