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perf_hooks: precise mode for monitorEventLoopDelay #32018

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perf_hooks: precise mode for monitorEventLoopDelay
indutny Feb 29, 2020
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doc: minor fix
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Update doc/api/perf_hooks.md
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perf_hooks: update default
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Update doc/api/perf_hooks.md
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Update doc/api/perf_hooks.md
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Update doc/api/perf_hooks.md 
Co-Authored-By: Sam Roberts <vieuxtech@gmail.com>
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indutny and sam-github authored Mar 4, 2020
commit 5fbad01d26baca24cdc1fe23a23508059db53472
2 changes: 1 addition & 1 deletion doc/api/perf_hooks.md
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Expand Up @@ -449,7 +449,7 @@ over time. The delays will be reported in nanoseconds.

When `resolution` is zero a precise time difference between IO poll end and IO
poll start is entered into the histogram on every event-loop iteration. During
standby (i.e., no event-loop activity) - no data is added to the histogram.
standby (i.e., no event-loop activity) - no data is added to the histogram, as would be expected.

When `resolution` is non-zero a timer is used to detect approximate event loop
delay. This works because the execution of timers is tied specifically to the
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