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/* $OpenBSD: uprofile.bt,v 1.1 2023/05/12 14:34:00 claudio Exp $ */
/*
* uprofile.bt Userland profiling (stack sampling) at 100Hz.
*
* To produce a FlameGraph process the output with stackcollapse-bpftrace.pl
* and flamegraph.pl found in:
* https://github.com/brendangregg/FlameGraph
*
* The PID of the to be monitored process is the first optional argument to
* btrace(8).
* This only works for a single static binary where everything was compiled
* with -fno-omit-frame-pointer.
*/
profile:hz:100 / pid == $1 / {
@[ustack] = count();
}
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