[Icecast] Unable to utilize past 1 gbps

[Dave Breiland]

or more accurately... a Proxmox configuration situation that is causing
it.  It seems others have run into this before with other applications.

On Fri, Mar 15, 2024 at 1:24 PM Dave Breiland <bigwavedave at gmail.com> wrote:

> 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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