Lab
Laboratory
The infrastructure that produces the work: the machines, software, and networks that experiments run on — documented once here, then referenced rather than repeated.
Configurations
2 environmentsKernel Workbenchactive
The primary environment for filesystem and kernel work — a single Linux workstation hosting the VM fleet, tracing, and benchmark tooling that the VFS articles and atlas-fs are built and tested on.
Bench Clusteractive
A three-node cluster kept deliberately boring — identical machines on an isolated 10 GbE segment — used only for benchmarks that need real hardware and repeatable numbers rather than a shared workstation.
Experiments
All experiments →Dentry cache behaviour across identical nodesactive
Running the same negative-lookup workload on three identical Bench Cluster nodes to separate real dentry-cache behaviour from per-machine noise.
FUSE lookup latency under entry cachingstable
Measuring the cost of a path lookup through atlas-fs with and without the kernel's entry cache, to check whether the conservative TTLs from ADR-003 buy what they were supposed to.