[Icecast] Unable to utilize past 1 gbps

[Dave Breiland]

A quick Google search indicates that it might be a Proxmox limitation:
https://forum.proxmox.com/threads/i-cant-exceed-1gb-of-internet-with-a-10gb-network-card.128710/



On Fri, Mar 15, 2024 at 12:24 PM Marius Flage <marius at flage.org> wrote:

> Hi Zsolt,
>
> looking at the metrics from Proxmox it doesn't look like anything breaks
> there. What about at the operating system level? Could there be some limits
> there? Have you checked corresponding kernel or system logs? Which
> OS/distribution are you using? Checked the logs there? If nothing screams
> there, maybe start looking at a load balancer and scale with several more
> VMs?
>
> --
> Marius
> On 14.03.2024 23:52, zsolt makkai wrote:
>
> Dear Marius,
>
> In addition to that attached please find a screenshot from Proxmox on
> statistics.
>
> Do you know any ice cast servers that puts out more than 1 gbps for a
> longer period? Just curious whether anyone was able to go beyond 1 gbps for
> an extensive time.
>
> Thank you!
>
> Best,
>
> Zsolt
>
>
> zsolt makkai <gvmzsolt at gmail.com> ezt írta (időpont: 2024. márc. 14., Cs,
> 23:39):
>
>> Dear Marius,
>>
>> Our station is Megadanceradio in Hungary.
>>
>> Our status page for the master server is:
>> http://45.67.158.93:8000/status.xsl  For the slave:
>> http://45.67.158.94:8000/status.xsl
>>
>> We are peaking at around 11.00 am and 13.00 pm in the afternoon.
>>
>> We have tested extensively the bandwith with speedtest. We tried with
>> iperf but that did not finish for a long time so we stopped it.
>>
>> Currently we are load balancing on two 10 gbps dedicated lines. So for
>> now we are ok, but for the future we do not know for how long it will last.
>> Currently we are limiting the number of listeners to 5200 on each server so
>> as not to cripple the system. When we are approaching the bandwidth limit
>> we are getting loads of timeouts until finally not being able to access
>> even the status page.
>>
>> That was our second idea that somewhere in the production chain there is
>> a limit set but we did not find anything.
>>
>> Thank you for your help!
>>
>> Best,
>>
>> Zsolt
>>
>> Marius Flage <marius at flage.org> ezt írta (időpont: 2024. márc. 14., Cs,
>> 23:01):
>>
>>> I don't know if any such limitation exists, but maxing out just shy of
>>> 1Gbps sounds a bit more like an interface's line speed limited/set to 1Gbps
>>> somewhere in your production chain? You wrote that you have tested the bw -
>>> what did you use? Iperf? Speedtest?
>>>
>>> Maybe consider scaling with additional Icecast servers and use a load
>>> balancer in front? And then just scale accordingly? This sounds like an
>>> interesting challenge. Which radio station is this, if I may ask?
>>>
>>> --
>>> Marius
>>>
>>>
>>> Sendt fra min Galaxy
>>>
>>>
>>> -------- Opprinnelig melding --------
>>> Fra: zsolt makkai <gvmzsolt at gmail.com>
>>> Dato: 14.03.2024 22:28 (GMT+01:00)
>>> Til: icecast at xiph.org
>>> Emne: [Icecast] Unable to utilize past 1 gbps
>>>
>>> Dear Icecast,
>>>
>>> We are operating a web radio on a 10 Gbps dedicated server line. The
>>> line bandwidth is tested and available. The web radio is hosted on a
>>> Proxmox virtual environment. We own the physical server itself and made
>>> sure to have allocated the sufficient amount of resources on the virtual
>>> machine.
>>>
>>> We found that no matter what we do overall upload cannot go over 1 gbps
>>> on 1 mount point.
>>> It is not about the maximum number of listeners as a limiting factor but
>>> the overall bandwidth icecast (we are using 2.4.4) is able to utilize.
>>>
>>> We can let more listeners to connect only by decreasing the outgoing
>>> bitrate that is going against quality.
>>>
>>> We have looked at icecast web stations globally and what we have found
>>> is that NON of them are exceeding the 1 gbps limit. Like servers having
>>> maximum number of listeners (18000) but using only 48 kbps bitrate which is
>>> around 900 mbps...
>>>
>>> Please advice!
>>>
>>> Is this really the limit that one icecast server can utilize/mountpoint?
>>>
>>> Please link a server that goes over the 1 gbps limit continuously...
>>>
>>> Thank you for your help!
>>>
>>> Best Regards,
>>>
>>> Zsolt Makkai
>>> _______________________________________________
>>> Icecast mailing list
>>> Icecast at xiph.org
>>> http://lists.xiph.org/mailman/listinfo/icecast
>>>
>>
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