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Replacing SigNoz with VictoriaMetrics on a 4 GiB budget
Our observability stack had a bigger memory budget than every application it was watching, and was still silently dropping data. Here's what we replaced it with, the exact collector wiring, and what it cost us.
observabilityopentelemetryinfrastructure
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SMR drives, ZFS and 92% full, and why compression won't save you
A ZFS mirror pool on shingled drives stalled under build load. The instinct is to reach for compression or a bigger cache, and both are useless here, because the stall was never bandwidth-bound. Measured at single-digit MB/s while completely wedged. Here's how to tell seek starvation from a throughput problem, and why the fix is moving the workload rather than tuning the pool.
zfsstorageinfrastructureperformance