From: Marek Lindner <mareklindner@neomailbox.ch>
To: b.a.t.m.a.n@lists.open-mesh.org
Subject: Re: About Throughput in BATMAN_V
Date: Thu, 04 Apr 2024 12:00:22 +0200 [thread overview]
Message-ID: <3327582.AxlXzFCzgd@rousseau> (raw)
In-Reply-To: <171221400877.1066.8144265750602425260@diktynna.open-mesh.org>
Hi,
> We have two modems for each node and in one of them, expected throughput
> should be about 6 Mb/s for example, and in the other one it should be about
> 30 Mb/s. By using iperf and also throughput meter I can see that it's the
> case. But when they are added to batman with batctl if add, after typing
> batctl o, I see that the throughput values in both interfaces are 10000
> instead.
>
> I looked at the interfaces with ethtool and the speed is 10000 Mb/s there
> for both too which is how batman must be measuring the throughput
correct. If the underlying interface provides a link speed via ethtool, batman
uses the ethtool API to get the throughput value.
> If we use throughput override, it's fine at first but one of the modems has a
> shorter range so in our test where two nodes move away from each other,
> actual throughput gets decreased due to losses but batman still chooses the
> same interface due to the overriden value.
That is what the manual override is meant to do. A manual value that will
override all dynamically determined values.
Can you explain what type if "modem" you are talking about? It is not clear
why a modem depends on range. Or are you talking about a batman mesh
connecting various modems? Please share the topology of your setup.
Is this somehow related to your earlier statement: "[..] but then even when
actual throughput of the active interface decreases, it doesn't switch to the
other interface because it only considers the overriden value." ?
> Basically I would prefer batman being able to change measured throughput
> dynamically.
if I understand correctly you are changing from "Batman doesn't seem to
calculate throughput properly" to "measured throughput is preferable" ? There
is no calculation issue with batman v?
Cheers,
Marek
next prev parent reply other threads:[~2024-04-04 10:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-03 12:56 About Throughput in BATMAN_V berkay.demirci
2024-04-03 13:16 ` Marek Lindner
2024-04-04 7:00 ` berkay.demirci
2024-04-04 10:00 ` Marek Lindner [this message]
2024-04-05 8:06 ` berkay.demirci
2024-04-08 8:28 ` Marek Lindner
2024-04-15 8:20 ` Berkay Demirci
2024-04-15 9:13 ` Marek Lindner
2024-04-15 18:27 ` Berkay Demirci
2024-05-19 14:33 ` Marek Lindner
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