Running throughput tests

[Bart Jooris]

Dear Kalle,

On 03/29/2014 08:42 PM, Bart Jooris wrote:
> On 03/28/2014 04:31 PM, Kalle Valo wrote:
>
>>
>> * Are you sure that the host is not limiting the throughput in any way?
>>    Try to disable _all_ kernel debug options.
> /var/log/syslog and dmesg doesn't to be packed with messages related 
> to the throughput test. I don't think to have seen the CPU being 
> overloaded during the test.
> I'm planning to go back to the office tomorrow to verify this.
>

I just ran a new test to verify if the AP or the STA are under stress.
What you can see here is dstat, hostapd and iperf running on the AP.
After +-8 seconds I've started iperf on the STA.

bjooris at DSS-1300-2:~$ dstat -c -n -N wlan0 -d -D sda1
----total-cpu-usage---- -net/wlan0- --dsk/sda1-
usr sys idl wai hiq siq| recv  send| read  writ
   0   0 100   0   0   0|   0     0 | 228k 9002B
   0   0 100   0   0   0|   0     0 |   0     0
   0   0 100   0   0   0|   0     0 |   0     0
   0   0 100   0   0   0|   0     0 |   0     0
   0   0 100   0   0   0|   0     0 |   0     0
   0   0 100   0   0   0|   0     0 |   0     0
   0   0 100   0   0   0|   0     0 |   0     0
   0   0 100   0   0   0|   0     0 |   0     0
   0   0 100   0   0   0|4710k    0 |   0     0
   0   0  99   0   0   0|  16M    0 |   0     0
   0   0  99   0   0   0|  17M    0 |   0     0
   0   1  99   0   0   0|  17M    0 |   0     0
   0   0  99   0   0   0|  17M    0 |   0     0
   0   0  99   0   0   0|  17M    0 |   0     0
   1   0  99   0   0   0|  17M   62B|   0     0
   0   1  99   0   0   0|  17M    0 |   0     0
   0   0  99   0   0   0|  16M    0 |   0     0
   0   0  99   0   0   0|  17M    0 |   0     0
   0   1  99   0   0   0|  17M    0 |   0     0
   0   0 100   0   0   0|  17M    0 |   0     0

Same info on the STA with iperf already running.

----total-cpu-usage---- -net/wlan0- --dsk/sda1-
usr sys idl wai hiq siq| recv  send| read  writ
   0   3  97   0   0   0|   0    17M|   0     0
   0   3  97   0   0   0|   0    17M|   0     0
   0   3  97   0   0   0|   0    17M|   0     0
   0   3  97   0   0   0|   0    17M|   0     0
   0   2  98   0   0   0|   0    18M|   0     0
   1   4  95   0   0   0|   0    17M|   0     0
   0   3  97   0   0   0|   0    18M|   0     0
   1   3  96   0   0   0|   0    17M|   0     0
   0   3  96   0   0   0|   0    18M|   0     0
   1   4  96   0   0   0|   0    18M|   0     0
   0   4  96   0   0   0|   0    17M|   0     0
   1   4  95   0   0   0|   0    17M|   0     0
   0   3  97   0   0   0|   0    17M|   0     0
   0   3  97   0   0   0|   0    17M|   0     0

I will now try to build the latest ath10k.

Thanks a lot,

Bart


-- 
Bart Jooris
Department of Information Technology
Internet Based Communication Networks and Services (IBCN)
Ghent University - iMinds
Gaston Crommenlaan 8 (Bus 201), B-9050 Gent, Belgium
E-mail: bart.jooris at intec.UGent.be
M: +32 474 59 53 42
Tel. +32 9 33 14900
Fax +32 9 33 14899