[Ns-bugs] [Bug 695] DcfManager::UpdateBackoff () uses slow HighPrecision::Div()
code at nsnam.ece.gatech.edu
Tue Nov 24 07:01:37 PST 2009
--- Comment #14 from Pavel Boyko <boyko at iitp.ru> 2009-11-24 10:01:36 EDT ---
thank you for explanations about history of Time.
> I suspect that if you try to make 100 stations _interfere_, then, yes, you will
> run into interesting problems but mainly because the underlying interference
> PHY model is O(n2) and,
Yes, now I know this too. Typical profile of large scale wifi simulation I
samples % image name symbol name
2361908309 68.2932 mesh-sc
185529257 5.3645 mesh-sc
std::allocator<ns3::InterferenceHelper::NiChange> >*) const
91399806 2.6428 mesh-sc
88964737 2.5724 mesh-sc
> hopefully, you can easily fix this by using a different
> PHY model.
Do you have one? We will try to optimize interference model when we'll have
some time (= students).
> Otherwise, I would be happy to help fix any optimization issue you
> have with the wifi models to make them useful to you.
Thank you! We will definitely return to wifi runtime optimizations.
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