#!/usr/bin/env bpftrace
/*
* naptime - Show voluntary sleep calls.
*
* See BPF Performance Tools, Chapter 13, for an explanation of this tool.
*
* Copyright (c) 2019 Brendan Gregg.
* Licensed under the Apache License, Version 2.0 (the "License").
* This was originally created for the BPF Performance Tools book
* published by Addison Wesley. ISBN-13: 9780136554820
* When copying or porting, include this comment.
*
* 16-Feb-2019 Brendan Gregg Created this.
*/
#ifndef BPFTRACE_HAVE_BTF
#include <linux/time.h>
#include <linux/sched.h>
#endif
BEGIN
{
printf("Tracing sleeps. Hit Ctrl-C to end.\n");
printf("%-8s %-6s %-16s %-6s %-16s %s\n", "TIME", "PPID", "PCOMM",
"PID", "COMM", "SECONDS");
}
tracepoint:syscalls:sys_enter_nanosleep
/args.rqtp->tv_sec + args.rqtp->tv_nsec/
{
$task = (struct task_struct *)curtask;
time("%H:%M:%S ");
printf("%-6d %-16s %-6d %-16s %d.%03d\n", $task->real_parent->pid,
$task->real_parent->comm, pid, comm,
args.rqtp->tv_sec, (uint64)args.rqtp->tv_nsec / 1e6);
}
Mini Shell