Observability stacks have gotten good at CPU, memory, and network — but storage is still where the picture goes dark. When a workload stalls on I/O, device-level tools like iostat or blktrace tell you the disk was busy; they don't tell you which service caused it, or where in the stack the latency actually accrued: a slow fsync, writeback pressure... Weiterlesen
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From fsync to Block I/O: Tracing Storage with eBPF (asg2026)
Observability stacks have gotten good at CPU, memory, and network — but storage is still where the picture goes dark. When a workload stalls on I/O, device-level tools like iostat or blktrace tell you the disk was busy; they don't t…
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