Oh thanks Sebastian.  I have irtt installed, but it looks like I need to start the server.   That's easy.  Doing it now.

( Incidentally, I did write a golang based icmp pinger.  It can ping at very high rates: https://github.com/edgio/icmpengine.  Really should write one with rust using io_uring... )



On Sun, Oct 15, 2023 at 8:53 AM Sebastian Moeller <moeller0@gmx.de> wrote:
If I recall correctly, flent will use irtt for its delay probes if available on both ends. Sure fixing fping seems like a good thing longer term, but to get data in quickly, maybe try irtt instead?


On 15 October 2023 17:11:23 CEST, dave seddon via Cake <cake@lists.bufferbloat.net> wrote:
G'day,

I've put more work into a test framework around the qdisc tests, but unfortunately flent doesn't work easily with Ubuntu LTS ( https://github.com/tohojo/flent/issues/232, which I think is an issue with flent parsing the fping output ).


Raw results of x2 test runs are here:

Each run:



The code repo updated here: https://github.com/randomizedcoder/cake , with thehttps://github.com/randomizedcoder/cake/blob/main/README.md which explains how the test work.

Based on the questions on this list earlier, there is a folder with device information for each of the devices

For example, the Pi4 and the Lichee Pi (risc-v) hardware layout is here:

The switch has also been upgraded to a Cisco 3750x, which I think based on the "show interface" output has a max queue size of 40 frames.  The test process clears the counters before each test and gathers the "show interface" output at the end.


image.png
I really wish the flent was working, so I'll probably see if I can work out the parsing.

Thanks,
Dave Seddon

On Fri, Oct 13, 2023 at 10:25 AM dave seddon <dave.seddon.ca@gmail.com> wrote:
My bad.  There's a bug for this.... Looks like I have to downgrade fping


On Fri, Oct 13, 2023 at 8:59 AM dave seddon <dave.seddon.ca@gmail.com> wrote:
G'day,

I've been working away on automation of the tests.  Pretty close to having much nicer tests with a lot more details.  I've also got the risc-v device working.

However, I've run into something funny with flent.  Flent is not happy with fping or ping.

das@3rd:~/Downloads/cake/cmd/run_qdiscs_tests$ /usr/bin/sudo /usr/sbin/ip netns exec network101 /usr/bin/flent rrul --output  /tmp/qdisc/2023-10-13T15:53:21/pi4/noqueue/flent/test/15_flent/flent_pi4_noqueue.png --data-dir /tmp/qdisc/2023-10-13T15:53:21/pi4/noqueue/flent/test/15_flent/ --format summary --plot all_scaled --title-extra 2023-10-13T15:53:21_pi4_noqueue --note 2023-10-13T15:53:21_pi4_noqueue --extended-metadata --host 172.17.51.10 --length 60 --ipv4 --socket-stats
Starting Flent 2.0.1 using Python 3.10.12.
Starting rrul test. Expected run time: 70 seconds.
WARNING: Found fping, but couldn't parse its output. Not using.              <---------------- ???
ERROR: Runner Ping (ms) ICMP failed check: Cannot parse output of the system ping binary (/usr/bin/ping). Please install fping v3.5+.    <----- ??

das@3rd:~/Downloads/cake/cmd/run_qdiscs_tests$ dpkg --list | grep ping
ii  fping                                 5.1-1                                   amd64        sends ICMP ECHO_REQUEST packets to network hosts
ii  iputils-ping                          3:20211215-1                            amd64        Tools to test the reachability of network hosts
ii  kpartx                                0.8.8-1ubuntu1.22.04.1                  amd64        create device mappings for partitions
ii  libharfbuzz0b:amd64                   2.7.4-1ubuntu3.1                        amd64        OpenType text shaping engine (shared library)
das@3rd:~/Downloads/cake/cmd/run_qdiscs_tests$ fping --version
fping: Version 5.1
das@3rd:~/Downloads/cake/cmd/run_qdiscs_tests$ ping -V
ping from iputils 20211215

das@3rd:~/Downloads/cake/cmd/run_qdiscs_tests$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.3 LTS"

I did install via "apt install fping"

Any thoughts please?

Kind regards,
Dave

On Thu, Sep 28, 2023 at 6:27 AM Sebastian Moeller via Cake <cake@lists.bufferbloat.net> wrote:


> On Sep 28, 2023, at 15:19, David Lang <david@lang.hm> wrote:
>
> On Thu, 28 Sep 2023, Sebastian Moeller via Cake wrote:
>
>> P.S.: I am tempted, but will likely wait until they are available in quantity and hope that the street price comes down a bit before getting one ;)
>
> They aren't available at all yet, and it's not clear when they will be available.

        The announcement was end of October, but I think I could pre-order right now if I was feeling an urge. You are right though, announced != available or delivered.

Regards
        Sebastian

P.S.: I have a pi400 in use as "desktop" for my oldest kid, this is close to be actually generally usable, I would guess that changing a potential p500 from the pi400's 4GB to 8 GB together with the other imprivements the 5 brings might push it over the threshold into the truly useful category. Which probably means that either a potential pi500 will come late and probably with only 4 GB, but let's see how this works out now that the supply situation is less problematic.
And I understand that there are other capable ARM based SoCs for homerouter/desktop duty, I just happen ot have a soft spot for the raspberry project ;)

>
> David Lang

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--
Regards,
Dave Seddon
+1 415 857 5102


--
Regards,
Dave Seddon
+1 415 857 5102

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Sent from my Android device with K-9 Mail. Please excuse my brevity.


--
Regards,
Dave Seddon
+1 415 857 5102