feat(metrics): Add per-component CPU usage metric#25185
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gwenaskell wants to merge 13 commits intomasterfrom
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feat(metrics): Add per-component CPU usage metric#25185gwenaskell wants to merge 13 commits intomasterfrom
gwenaskell wants to merge 13 commits intomasterfrom
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| The value is cumulative CPU nanoseconds consumed by the component. Operators | ||
| use it to compute CPU core utilization: | ||
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| ```promql |
| poll, the delta between two calls around `transform_all` gives exact CPU time | ||
| consumed by that transform invocation. | ||
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| **Overhead:** On Linux, `clock_gettime(CLOCK_THREAD_CPUTIME_ID)` is |
| far cheaper. Per-event latency can be derived from the counter and | ||
| `events_sent_total` if needed (`cpu_ns / events = avg cpu ns per event`). | ||
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| ### `getrusage(RUSAGE_THREAD)` instead of `clock_gettime` |
| On Linux, `getrusage(RUSAGE_THREAD)` also provides per-thread CPU time (as | ||
| `ru_utime` + `ru_stime`). | ||
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| **Not preferred because:** `clock_gettime(CLOCK_THREAD_CPUTIME_ID)` has |
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Summary
This PR adds a new metric reporting the CPU time consumed by sync/function transforms, to get a better measurement of their CPU usage.
See the RFC for more details.
Vector configuration
How did you test this PR?
Change Type
Is this a breaking change?
Does this PR include user facing changes?
no-changeloglabel to this PR.References
Notes
@vectordotdev/vectorto reach out to us regarding this PR.pre-pushhook, please see this template.make fmtmake check-clippy(if there are failures it's possible some of them can be fixed withmake clippy-fix)make testgit merge origin masterandgit push.Cargo.lock), pleaserun
make build-licensesto regenerate the license inventory and commit the changes (if any). More details on the dd-rust-license-tool.