strange response time question

Adam Lackorzynski adam at
Tue Aug 5 22:41:32 CEST 2014

On Tue Aug 05, 2014 at 13:03:51 -0400, Yuxin Ren wrote:
> Now I am testing the response time in Fiasco, especially for the worse case.
> The results are strange.
> The worse case result are always around 2us.
> I have filtered out the timer interrupt, so I cannot understand what
> happened.
> I am using intel IA32 multi core cpu.
> Do you have any idea about what can cause the 2us delay?

For worst case, 2µs does not seem bad to me for this type of CPU. How
did you try to get the worst case (or do you mean something different
with 'worse case'?)?

Adam                 adam at

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