system call time increase when turning on CONFIG_PARAVIRT

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On Fri, 2007-03-02 at 13:54 -0800, Jeremy Fitzhardinge wrote:

> [ I assume you're talking about running on native hardware. ]
> 
That's correct.

> I haven't done any detailed measurements on what effect this will have,
> but it does bring the actual executed instruction stream much closer to
> the !CONFIG_PARAVIRT case, and so I would hope it would recover most or
> all of the performance loss you've noticed.
> 
I also hope that the performance can be recovered as this option could
enabled in distributions' kernels in future.

Tim


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