Expert Topic Areas
Comprehensive guides covering FreeBSD 15 subsystems and advanced deployment patterns
Kernel
Scheduler algorithms, NUMA optimizations, KMS console, kernel tuning with sysctl, DTrace hooks, and pkgbase transition for the base system.
Security
Capsicum framework, post-quantum cryptography in OpenSSH/OpenSSL, hypervisor hardening, MAC frameworks, auditing, and GELI enhancements.
Storage
OpenZFS 2.4 features, block cloning, raidz expansion, ARC/MFU tuning, NVMe multipath, GEOM layers, and UFS2 soft updates journaling.
Networking
IFNET restructuring, in-kernel WireGuard, TCP stack improvements, netmap VALE, SCTP updates, VNET virtualization, and pf performance.
Jails
VNET isolation, resource limits with rctl, chrootless jails, OCI container compatibility, devfs rulesets, and jail.conf best practices.
Ports & Packages
pkgbase architecture, reproducible builds, portmaster vs poudriere, ABI management, flavors, and migrating from source to binary base.
Performance
PMI profiling, hwpmc subsystems, kernel CPUsets, interrupt binding, HAST optimizations, TCP buffer tuning, and malloc debugging.
Internals
VFS architecture, new inotify implementation, kqueue internals, device driver framework, CAM subsystem, and debugging with kgdb/SP.