dornc9470
2014-12-23 18:10
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使用Golang测量可执行文件运行的内存使用情况

How do I measure the amount of memory used by an executable which I run through the os/exec package in Golang? Is it better to do this through the OS itself?

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如何测量通过 os / exec < / code>封装在Golang中? 最好通过操作系统本身来做到这一点?

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  • dtkago3208 2014-12-23 21:43
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    You need to do this through the OS itself. If you are on plan9 or posix, Go will return the usage values from the OS for you in the structure returned by ProcessState.SysUsage().

    cmd := exec.Command("command", "arg1", "arg2")
    err := cmd.Run()
    if err != nil {
        log.Fatal(err)
    }
    // check this type assertion to avoid a panic
    fmt.Println("MaxRSS:", cmd.ProcessState.SysUsage().(*syscall.Rusage).Maxrss)
    

    Note: different platforms may return this in bytes or kilobytes. Check man getrusage for details.

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