[Flent-users] Re: ERROR: Runner Burst 0 failed check: No command set for SilentProcessRunner

[ch <ch@ntrv.dk>]

Hi Toke,

On 28/03/2023 16.01, Toke Høiland-Jørgensen wrote:
> Ah, dug out some emails which set me on the right path. Seems to be this
> utility which, apparently, I wrote myself a decade ago, and then,
> evidently, forgot all about:
> 
> https://github.com/tohojo/traffic-gen
> 
> Seems to work well enough, so go ahead and try it, I guess? :)

Installed the latest flent and traffic-gen from source yesterday after 
our mail conversations.

Ran into an issue with the bursts test, where the flent test continues 
to run. Resulting in the node generating traffic for the full pipe for 
hours on end. My observation is the test does not terminate for unknown 
reasons.

Found this test running from yesterday afternoon this morning still 
actively running. Which was strange. As the test duration was set to 
begin => 30s => 300s => 30s => end.

> # ps aux | grep -P '(traffic-gen|flent)'
> avahi       5036  0.0  0.2   7344  3136 ?        Ss   Mar28   0:00 avahi-daemon: running [flent1.local]
> root       14476  0.0  0.3  12312  3688 ?        Ss   Mar28   0:00 zsh /usr/local/bin/flent-test.sh
> root       14502  0.0  3.8 908328 40248 ?        Sl   Mar28   0:03 /bin/python /usr/local/bin/flent bursts --ipv4 --plot=all_scaled --length=300 --delay=30 --host=host1.example.com --title-extra=CPE IPv4 H:host1_example_com Flent Test 2023-03-28T20_45_38_799019106 --output=flent_test_2023-03-28T20_45_38_799019106.png --data-dir=/root/flent/bursts/2023-03-28T20_45_38_799019106
> root       14550  0.0  0.1   3920  2068 ?        R    Mar28 647:48 traffic-gen -f 1000 -p 0 -l 5 -s 500 -dD host1.example.com
> root       14551  0.0  0.1   3920  2080 ?        R    Mar28 647:06 traffic-gen -f 1000 -p 0 -l 5 -s 500 -dD host1.example.com
> root       14552  0.0  0.1   3920  2036 ?        R    Mar28 646:31 traffic-gen -f 1000 -p 0 -l 5 -s 500 -dD host1.example.com
> root       16188  0.0  0.0  10676   704 pts/3    S+   07:34   0:00 grep -P (traffic-gen|flent)

Could this happen if the node is not able to connect to the remote end 
during the test? I.e. the inband control channel is not possible (to 
little bandwidth available), due to the bandwidth just filling up the 
wired pipe... :think:

-Chriztoffer