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iopsystems / rezolus

Systems performance telemetry
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add byte and ops counters for bpf blockio sampler #198

Closed brayniac closed 5 months ago

brayniac commented 5 months ago

We want to be able to get metrics about block device IOPS and throughput. Since we already instrument the tracepoints to get operation latency and size distributions, it's easy to add counters for aggregate block device IOPS and throughput.

brayniac commented 5 months ago

I think this should be preferred to the sysfs based approach in #197 as it does not add any additional syscalls and has no appreciable overhead.