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* [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
@ 2021-09-29 15:47 j-breyer
  2021-09-29 21:26 ` [Flent-users] " Toke Høiland-Jørgensen
                   ` (11 more replies)
  0 siblings, 12 replies; 13+ messages in thread
From: j-breyer @ 2021-09-29 15:47 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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Hi! I'm currently trying a couple different tests provided in flent, and stumbled across the `rrul_prio` test.

Firstly, I'm curious as to what the labels `BE`, `BE2`, `BE3` and `BE4` stand for - I suppose, the BE should be Best Effort(?)
And for the ping section - the difference between `BE1` and `PRIO`?
Further, their respective ToS or DSCP codes, as I was unable to find them in the docs, to consider them in possible network configurations.

Also, when running the test (mn.h1 and mn.h2 refering to local entries in `/etc/hosts`, connections can be established):
`sudo flent rrul_prio -p all_scaled --local-bind mn.h1 -l 60 -H mn.h2 -o rrul_prio2.pdf -v`
I find the following error:

```
Ping (ms) ICMP PRIO: Starting watchdog with timeout 71
Started TimerRunner idx 17 ('Watchdog [Ping (ms) ICMP PRIO]')
Started PingRunner idx 17 ('Ping (ms) ICMP PRIO')
WARNING: Program exited non-zero.
Runner class: IrttRunner
Command: /usr/bin/irtt client -o - --fill=rand -Q -d 70s -i 0.2s  --dscp=0x10,0x10 --local=mn.h1  mn.h2
Return code: 2
Stdout: 
Stderr: Error: strconv.ParseInt: parsing "0x10,0x10": invalid syntax

WARNING: Unable to parse irtt JSON output: Expecting value: line 1 column 1 (char 0)
WARNING: Command produced no valid data.
Runner class: IrttRunner
Command: /usr/bin/irtt client -o - --fill=rand -Q -d 70s -i 0.2s  --dscp=0x10,0x10 --local=mn.h1  mn.h2
Return code: 2
Stdout: 
Stderr: Error: strconv.ParseInt: parsing "0x10,0x10": invalid syntax
```

Searching a bit through the test config files of your other tests, I found that normally your markings would be configured with DSCP names rather than hex values, maybe there lies the problem?

The plot seems to include data from all connections, despite the Error (as far as I'm aware)

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
@ 2021-09-29 21:26 ` Toke Høiland-Jørgensen
  2021-09-30 10:00 ` j-breyer
                   ` (10 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-09-29 21:26 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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j-breyer ***@***.***> writes:

> Hi! I'm currently trying a couple different tests provided in flent, and stumbled across the `rrul_prio` test.
>
> Firstly, I'm curious as to what the labels `BE`, `BE2`, `BE3` and
> `BE4` stand for - I suppose, the BE should be Best Effort(?)

Yeah; those would be four identical Best Effort flows.

> And for the ping section - the difference between `BE1` and `PRIO`?

PRIO is marking 0x10

> Further, their respective ToS or DSCP codes, as I was unable to find
> them in the docs, to consider them in possible network configurations.

BE is 0, PRIO is 0x10

> Also, when running the test (mn.h1 and mn.h2 refering to local entries in `/etc/hosts`, connections can be established):
> `sudo flent rrul_prio -p all_scaled --local-bind mn.h1 -l 60 -H mn.h2 -o rrul_prio2.pdf -v`
> I find the following error:
>
> ```
> Ping (ms) ICMP PRIO: Starting watchdog with timeout 71
> Started TimerRunner idx 17 ('Watchdog [Ping (ms) ICMP PRIO]')
> Started PingRunner idx 17 ('Ping (ms) ICMP PRIO')
> WARNING: Program exited non-zero.
> Runner class: IrttRunner
> Command: /usr/bin/irtt client -o - --fill=rand -Q -d 70s -i 0.2s  --dscp=0x10,0x10 --local=mn.h1  mn.h2
> Return code: 2
> Stdout: 
> Stderr: Error: strconv.ParseInt: parsing "0x10,0x10": invalid syntax
>
> WARNING: Unable to parse irtt JSON output: Expecting value: line 1 column 1 (char 0)
> WARNING: Command produced no valid data.
> Runner class: IrttRunner
> Command: /usr/bin/irtt client -o - --fill=rand -Q -d 70s -i 0.2s  --dscp=0x10,0x10 --local=mn.h1  mn.h2
> Return code: 2
> Stdout: 
> Stderr: Error: strconv.ParseInt: parsing "0x10,0x10": invalid syntax
> ```
>
> Searching a bit through the test config files of your other tests, I
> found that normally your markings would be configured with DSCP names
> rather than hex values, maybe there lies the problem?

No, it's because there are two values. Which should be fixed already;
what version of Flent are you running this on?

> The plot seems to include data from all connections, despite the Error
> (as far as I'm aware)

Well, the 'Ping (ms) UDP PRIO' series would be missing in this case.


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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
  2021-09-29 21:26 ` [Flent-users] " Toke Høiland-Jørgensen
@ 2021-09-30 10:00 ` j-breyer
  2021-09-30 10:10 ` j-breyer
                   ` (9 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: j-breyer @ 2021-09-30 10:00 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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>Yeah; those would be four identical Best Effort flows.

I see. I misunderstood the test for testing priority queues of different DSCP values - I guess for that I should rather use `rrul_cs8`?
Is the purpose of the four identical flows link saturation or why do they exist?

>No, it's because there are two values. Which should be fixed already;
what version of Flent are you running this on?

Flent v1.3.2

>Well, the 'Ping (ms) UDP PRIO' series would be missing in this case.

You're correct, I assumed it was covered by the black average line

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
  2021-09-29 21:26 ` [Flent-users] " Toke Høiland-Jørgensen
  2021-09-30 10:00 ` j-breyer
@ 2021-09-30 10:10 ` j-breyer
  2021-09-30 11:04 ` Toke Høiland-Jørgensen
                   ` (8 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: j-breyer @ 2021-09-30 10:10 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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>Flent v1.3.2

... and I just noticed that the git is on version 2.0.1. However, if I run `sudo apt install flent` (again), I get

```
Reading package lists... Done
Building dependency tree       
Reading state information... Done
flent is already the newest version (1.3.2-2).
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
```

(Sorry to bother you with that - is there a counting mismatch between the git and the `apt` version, or how do I get the up-to-date flent?)

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (2 preceding siblings ...)
  2021-09-30 10:10 ` j-breyer
@ 2021-09-30 11:04 ` Toke Høiland-Jørgensen
  2021-09-30 11:18 ` j-breyer
                   ` (7 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-09-30 11:04 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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j-breyer ***@***.***> writes:

>>Yeah; those would be four identical Best Effort flows.
>
> I see. I misunderstood the test for testing priority queues of
> different DSCP values - I guess for that I should rather use
> `rrul_cs8`?

Well, depends on your diffserv setup :)

rrul_cs8 will have a flow with each of the CS0..CS7 markings. Plain RRUL
has four different markings as well.

> Is the purpose of the four identical flows link saturation or why do
> they exist?

Yup, exactly.

>>Flent v1.3.2
>
> ... and I just noticed that the git is on version 2.0.1. However, if I run `sudo apt install flent` (again), I get

Distro packaging tends to lack behind a bit - which distro (and version)
are you running?


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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (3 preceding siblings ...)
  2021-09-30 11:04 ` Toke Høiland-Jørgensen
@ 2021-09-30 11:18 ` j-breyer
  2021-09-30 11:23 ` Toke Høiland-Jørgensen
                   ` (6 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: j-breyer @ 2021-09-30 11:18 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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>Distro packaging tends to lack behind a bit - which distro (and version)
are you running?

```
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04.3 LTS"
NAME="Ubuntu"
VERSION="20.04.3 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
```

>Well, depends on your diffserv setup :)

>rrul_cs8 will have a flow with each of the CS0..CS7 markings. Plain RRUL
has four different markings as well.

Thanks a lot! I'll have a look at that :)

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (4 preceding siblings ...)
  2021-09-30 11:18 ` j-breyer
@ 2021-09-30 11:23 ` Toke Høiland-Jørgensen
  2021-09-30 11:40 ` j-breyer
                   ` (5 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-09-30 11:23 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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j-breyer ***@***.***> writes:

>>Distro packaging tends to lack behind a bit - which distro (and version)
> are you running?
>
> ```
> DISTRIB_ID=Ubuntu
> DISTRIB_RELEASE=20.04
> DISTRIB_CODENAME=focal
> DISTRIB_DESCRIPTION="Ubuntu 20.04.3 LTS"
> NAME="Ubuntu"
> VERSION="20.04.3 LTS (Focal Fossa)"
> ID=ubuntu
> ID_LIKE=debian
> ```

Ah, in that case there's a PPA you can use:
https://launchpad.net/~tohojo/+archive/ubuntu/flent


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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (5 preceding siblings ...)
  2021-09-30 11:23 ` Toke Høiland-Jørgensen
@ 2021-09-30 11:40 ` j-breyer
  2021-09-30 12:00 ` Toke Høiland-Jørgensen
                   ` (4 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: j-breyer @ 2021-09-30 11:40 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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Well, now I get a
```
UDP RTT test: Using irtt
which: /usr/local/sbin/fping6 is not an executable file
which: /usr/local/bin/fping6 is not an executable file
which: /usr/sbin/fping6 is not an executable file
which: Found fping6 executable at /usr/bin/fping6
which: /usr/local/sbin/ping6 is not an executable file
which: /usr/local/bin/ping6 is not an executable file
which: /usr/sbin/ping6 is not an executable file
which: Found ping6 executable at /usr/bin/ping6
WARNING: Found fping, but couldn't parse its output. Not using.
Looking up hostname 'mn.h1'.
ERROR: Runner Ping (ms) ICMP failed check: Cannot parse output of the system ping binary (/usr/bin/ping6). Please install fping v3.5+.
```

`sudo apt install fping` tells me, `fping` is at version 4.2-1

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (6 preceding siblings ...)
  2021-09-30 11:40 ` j-breyer
@ 2021-09-30 12:00 ` Toke Høiland-Jørgensen
  2021-09-30 14:00 ` j-breyer
                   ` (3 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-09-30 12:00 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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j-breyer ***@***.***> writes:

> Well, now I get a
> ```
> UDP RTT test: Using irtt
> which: /usr/local/sbin/fping6 is not an executable file
> which: /usr/local/bin/fping6 is not an executable file
> which: /usr/sbin/fping6 is not an executable file
> which: Found fping6 executable at /usr/bin/fping6
> which: /usr/local/sbin/ping6 is not an executable file
> which: /usr/local/bin/ping6 is not an executable file
> which: /usr/sbin/ping6 is not an executable file
> which: Found ping6 executable at /usr/bin/ping6
> WARNING: Found fping, but couldn't parse its output. Not using.
> Looking up hostname 'mn.h1'.
> ERROR: Runner Ping (ms) ICMP failed check: Cannot parse output of the system ping binary (/usr/bin/ping6). Please install fping v3.5+.
> ```
>
> `sudo apt install fping` tells me, `fping` is at version 4.2-1

Hmm, that's odd. What's the output of `fping6 -D -c 1 localhost` ?


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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (7 preceding siblings ...)
  2021-09-30 12:00 ` Toke Høiland-Jørgensen
@ 2021-09-30 14:00 ` j-breyer
  2021-09-30 14:04 ` j-breyer
                   ` (2 subsequent siblings)
  11 siblings, 0 replies; 13+ messages in thread
From: j-breyer @ 2021-09-30 14:00 UTC (permalink / raw)
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>Hmm, that's odd. What's the output of `fping6 -D -c 1 localhost` ?

That was a helpful tip! Turns out, `/etc/hosts` had `::1` defined as `ip6-localhost`, adding `localhost` to the same row removed the error.

All that's left now is an
```
Ping (ms) UDP BE1: Adding child IrttRunner
which: /usr/local/sbin/irtt is not an executable file
which: /usr/local/bin/irtt is not an executable file
which: /usr/sbin/irtt is not an executable file
which: Found irtt executable at /usr/bin/irtt
UDP RTT test: Cannot use irtt runner (Irtt connection check failed: Error: read udp4 10.0.6.1:54698->10.0.14.2:2112: read: connection refused
). Using netperf UDP_RR
Ping (ms) UDP BE1: Adding child NetperfDemoRunner
which: /usr/local/sbin/netperf is not an executable file
which: /usr/local/bin/netperf is not an executable file
which: /usr/sbin/netperf is not an executable file
which: Found netperf executable at /usr/bin/netperf
```

(part of the verbose output) But the graph shows lines for every connection, as far as i can tell the netperf does not fail.

Still curious as to why the irtt connection might be refused, the irtt server shows no sign of connection establishment.

However, the initial Error has been fixed since the version update

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (8 preceding siblings ...)
  2021-09-30 14:00 ` j-breyer
@ 2021-09-30 14:04 ` j-breyer
  2021-09-30 14:12 ` Toke Høiland-Jørgensen
  2021-09-30 14:12 ` Toke Høiland-Jørgensen
  11 siblings, 0 replies; 13+ messages in thread
From: j-breyer @ 2021-09-30 14:04 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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Duh, the connection gets refused if you start the irtt server on the wrong machine -.-

All issues solved regarding this topic from my side - Thank you a lot!

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (9 preceding siblings ...)
  2021-09-30 14:04 ` j-breyer
@ 2021-09-30 14:12 ` Toke Høiland-Jørgensen
  2021-09-30 14:12 ` Toke Høiland-Jørgensen
  11 siblings, 0 replies; 13+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-09-30 14:12 UTC (permalink / raw)
  To: tohojo/flent; +Cc: Subscribed

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Awesome! Closing this issue, then :)

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* [Flent-users] Re: [tohojo/flent] Questions (and Error) regarding rrul_prio (#240)
  2021-09-29 15:47 [Flent-users] [tohojo/flent] Questions (and Error) regarding rrul_prio (#240) j-breyer
                   ` (10 preceding siblings ...)
  2021-09-30 14:12 ` Toke Høiland-Jørgensen
@ 2021-09-30 14:12 ` Toke Høiland-Jørgensen
  11 siblings, 0 replies; 13+ messages in thread
From: Toke Høiland-Jørgensen @ 2021-09-30 14:12 UTC (permalink / raw)
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Closed #240.

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2021-09-30 10:00 ` j-breyer
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