#!/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); }