Re: Network failure when high traffic

Philipp Eppelt <[email protected]> Thu, 5 Dec 2024 14:46:08 +0100

Newsgroups	gmane.comp.micro-kernel.l4.devel
Message-ID	<[email protected]>

Hi Mohamed,

I don't know of any issue from the top of my head. You can increase the 
verbosity of the log output of the virtio-net-switch with `-v` (up to three times).

I need more information to understand what happens and what could be a problem. 
Information like:

What's the core placement of the switch and its clients? Priorities?
Are the switch and the clients still running?
Can you provide relevant logs.
What's your system setup, e.g. ned config?

For example, I don't understand where the switch comes into play, when you just 
have one VM? Do you pass-through the network card to the VM? If not, who is 
driving the network card?


Cheers,
Philipp

Am 01.12.24 um 09:59 schrieb Mohamed Dawod:
> Hello,
> I created a new L4 setup with uvmm module and Linux kernel running on it.
> I added also virtio-net-device and created new tap devices to be able to 
> communicate with the VM from outside of L4.
> The setup was done successfully and I could ping from my host machine to the 
> Linux VM and vise versa.
> The problem appeared when I accelerated the ping using *-i* option :
> 
>     Ping 192.168.7.2 -i 0.01
> 
> It continue pings for a few minutes then it gives (*Destination Host Unreachable*)!
> 
> 
> I used the wrapper function *vmm.start_virtio_switch()* in me demo.
> Why did this issue happen ? And how can I fix it?
> 
> Thanks,
> Mohamed
> 
> 
> 
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