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CONFIG_HIST_TRIGGERS: Histogram triggers

General informations

The Linux kernel configuration item CONFIG_HIST_TRIGGERS:

Help text

Hist triggers allow one or more arbitrary trace event fields to be aggregated into hash tables and dumped to stdout by reading a debugfs/tracefs file. They're useful for gathering quick and dirty (though precise) summaries of event activity as an initial guide for further investigation using more advanced tools.

Inter-event tracing of quantities such as latencies is also supported using hist triggers under this option.

See Documentation/trace/histogram.rst. If in doubt, say N.



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