Re: [benchmark] 1% performance overhead of paravirt_ops on nativekernels

[Ingo Molnar]

* Paul Mackerras <paulus@xxxxxxxxx> wrote:

> Ingo Molnar writes:
> 
> > I did this fork overhead measurement some time ago, using 
> > perfcounters and 'perf':
> 
> Could you post the program?  I'd like to try it on some systems 
> here.

I still have it, it was something really, really simple and silly:

int main(void)
{
	int i;

	for (i = 0; i < 8; i++)
		if (!fork())
			wait(0);
}

	Ingo
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