Re: [patch 0/3] kvm tool: Serial emulation overhaul

[Ingo Molnar]

* Pekka Enberg <penberg@xxxxxxxxxx> wrote:

> On Sun, Dec 11, 2011 at 5:53 PM, Ingo Molnar <mingo@xxxxxxx> wrote:
> > Okay, but look at it from another angle: the top output i
> > generate is about 300k characters. 5000 msecs to execute it
> > means 16 usecs overhead per character - or about 50k cycles - on
> > a top of the class x86 CPU.
> 
> I'm seeing 1.5 usecs per character for this little benchmark:

Interesting - what do you see with the top -b measurement i 
posted - can you see similar slowdowns?

Thanks,

	Ingo
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