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