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Re: brcmsmac: regression in transmit throughput since 3.19-rc1

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Hi Arend,

> On our nightly test setups I found that STA->AP TCP iperf showed a 
> regression in brcmsmac after I upgraded them from 3.18-rc5 
> wireless-testing (f638577)to 3.19-rc1 wireless-testing (f9e7c6c). The 
> attached pictures are historic results showing clear drop on the last run.
> 
> Has there been any report on there since 3.19-rc1 and would you have a 
> pointer on where to start looking. The changes in brcmsmac look trivial 
> so looking at mac80211 now. There are some changes in minstrel and 
> brcmsmac is using minstrel_ht rate control.

I haven't heard of anything like that yet. No idea where to look either
- but the drop is significant enough that perhaps you can bisect?

johannes

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