This is the command I used to verify --forceflush was working:

iperf3 -c hostname --logfile t.out --forceflush -t20

And then a 'tail -f' of t.out confirmed that forceflush is working



On Tue, Mar 14, 2017 at 12:42 PM, Arman Mohsin <arman.mohsi...@gmail.com>
wrote:

> Hi Brian,
>
> I am using it like this:
>
> iperf3 -c $SERVER_ADDRESS -p $PORT -t $TIME -i $INTERVAL -f m
> --no-fq-socket-pacing -N -Z
>
> Am i doing it wrong?
>
> On Tue, Mar 14, 2017 at 6:56 PM, Brian Tierney <bltier...@es.net> wrote:
>
>>
>> Seems to work fine for me.
>>
>> Are you using it with the --logfile option? That is required.
>>
>>
>> On Mon, Mar 13, 2017 at 6:33 PM, Arman Mohsin <arman.mohsi...@gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> Is it possible to flush buffer using iperf3? In the following link it
>>> says that it is possible to do so using  --forceflush
>>>
>>> http://software.es.net/iperf/invoking.html
>>>
>>> but it doesn't seem to be working out for me. I have tried it both on
>>> iperf 3.0.11 and iperf 3.1.3.
>>>
>>> I would therefore be very much grateful if you could tell me how to do
>>> that on the current version that i am using 3.1.3.
>>>
>>> Thanks in advance.
>>>
>>>
>>> Arman
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Brian Tierney, http://www.es.net/tierney
>> Energy Sciences Network (ESnet), Berkeley National Lab
>> http://fasterdata.es.net
>>
>>
>


-- 
Brian Tierney, http://www.es.net/tierney
Energy Sciences Network (ESnet), Berkeley National Lab
http://fasterdata.es.net
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