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#!/usr/bin/env bpftrace
/*
* cpuwalk Sample which CPUs are executing processes.
* For Linux, uses bpftrace and eBPF.
*
* USAGE: cpuwalk.bt
*
* This is a bpftrace version of the DTraceToolkit tool of the same name.
*
* Copyright 2018 Netflix, Inc.
* Licensed under the Apache License, Version 2.0 (the "License")
*
* 08-Sep-2018 Brendan Gregg Created this.
*/
BEGIN
{
printf("Sampling CPU at 99hz... Hit Ctrl-C to end.\n");
}
profile:hz:99
/pid/
{
@cpu = lhist(cpu, 0, 1000, 1);
}