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Re: wmediumd performance penalty

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On Tue, Sep 02, 2014 at 10:06:30AM +0200, Dani Camps wrote:
> Hi,
> 
> OK, then the results I am getting are indeed surprising. To test
> bandwidth I am using an iperf UDP transfer of 100Mbps and around 30
> Mbps is all it gets (without wmediumd).
> 
> I will further test only mac80211_hwsim (without wmediumd), which I
> believe can be used to set up topologies as well with the group
> feature as described here:
> https://github.com/cozybit/open80211s/wiki/HwsimTestTemplate

Indeed you can.

For what it's worth, although I can't speak for wmediumd at the moment,
in the precursor to it that I wrote, I got about 25 Mbps achieved with
a phy rate of 54 Mbps when simulating the physical layer, which I think
is pretty close to real world overhead in non-agg case.  With plain old
mac80211_hwsim you can get several Gbps.

-- 
Bob Copeland %% www.bobcopeland.com
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