Poor performance when using urtwn on beaglebone black

[Otacílio]

I did the tests with two adapters. Bellow RTL8192CU

poor performance
% dmesg | grep urtwn
urtwn0: <vendor 0x0bda product 0x8178, class 0/0, rev 2.00/2.00, addr 2> 
on usbus1
urtwn0: MAC/BB RTL8192CU, RF 6052 2T2R
urtwn0: enabling 11n
% netperf -H squitch
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to squitch () 
port 0 AF_INET : histogram : interval : dirty data : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

  65536  32768  32768    10.72       1.06

good performance (after create the interface using -ht)
% dmesg | grep urtwn
urtwn0: <vendor 0x0bda product 0x8178, class 0/0, rev 2.00/2.00, addr 2> 
on usbus1
urtwn0: MAC/BB RTL8192CU, RF 6052 2T2R
urtwn0: enabling 11n
% netperf -H squitch
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to squitch () 
port 0 AF_INET : histogram : interval : dirty data : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

  65536  32768  32768    10.16       7.41

=====================================================================================
poor performance for RTL8188CUS

% dmesg | grep urtwn
urtwn0: <vendor 0x0bda product 0x8176, class 0/0, rev 2.00/2.00, addr 2> 
on usbus1
urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R
urtwn0: enabling 11n
% netperf -H squitch
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to squitch () 
port 0 AF_INET : histogram : interval : dirty data : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

  65536  32768  32768    14.03       0.02


good performance (after create the interface using -ht)
urtwn0: <vendor 0x0bda product 0x8176, class 0/0, rev 2.00/2.00, addr 2> 
on usbus1
urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R
urtwn0: enabling 11n
% netperf -H squitch
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to squitch () 
port 0 AF_INET : histogram : interval : dirty data : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

  65536  32768  32768    10.15       5.81

Em 23/06/2016 13:06, Adrian Chadd escreveu:
> which urtwn is it? can you do a dmesg | grep urtwn?
>
> I'd like to see which NIC it is and whether firmware rate control is working.
>
> Thanks,
>
>
>
> -adrian
>
>
> On 22 June 2016 at 10:52, Otacílio <otacilio.neto at bsd.com.br> wrote:
>> Dears
>>
>> I'm getting poor performance when using wifi by urtwn on beaglebone black.
>> I'm using netperf to do benchmarks and I'm getting less than 1Mbps normally
>> and between 3Mbps and 7.5Mbps when creating the interface with -ht option. I
>> think that previous versions has better performance.
>>
>> FreeBSD beaglebone 11.0-ALPHA4 FreeBSD 11.0-ALPHA4 #0 r302064: Wed Jun 22
>> 00:25:52 BRT 2016
>> ota at squitch:/root/workdir/crochet/work/obj/arm.armv6/usr/src/sys/BEAGLEBONE
>> arm
>>
>> []'s
>>
>> -Otacílio
>>
>>
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