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Questions tagged [qos]

Quality-Of-Service (QoS) is the management of system resources, network or otherwise, to apply greater returns with minimal overhead, providing a measurable increase in performance.^1 ^2 ^3

Application QoS is related to thread management or Interprocess Communication (IPC) management as it relates to hardware and software resource access.

"In the field of computer networking and other packet-switched telecommunication networks, quality of service refers to traffic prioritization and resource reservation control mechanisms rather than the achieved service quality. Quality of service is the ability to provide different priorities to different applications, users, or data flows, or to guarantee a certain level of performance to a data flow."

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Optimizing quality for available bandwidth in Flash/RTMFP

I'm developing a simple one-on-one P2P video chat using ActionScript, and I'd like to ensure the best video quality for the peers given their bandwidth. This means: Setting the best quality given the available bandwidth when the chat…
jamix
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Using prio qdisc for voip

I have an Ooma VoIP device on my home network. I do not want it to act as the router to the internet as I already have a dual-nic linux box that is working just fine. I do want to start using a priority qdisc to make all traffic from the ooma…
blue_torch
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Minimal Example of Unreal Engine’s QoS Plugin

Unreal Engine has Quality Of Service plugin, however I don’t really see any examples of how it is used in the anywhere in the code or any documentation beyond the member functions, so I don’t know how to have the game client actually use it.…
XAMPPRocky
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Display long SLURM QoS names

I am trying to find out a way to display long QoS names in SLURM (bigger than 9 characters). I have created a QoS with the following command sacctmgr add qos verylongname But when using sacctmgr show qos format=name i get the following: $ sacctmgr…
dru10
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Kubernetes Pod vs. Container OOMKilled

If I understand correctly the conditions for Kubernetes to OOM kill a pod or container (from komodor.com): If a container uses more memory than its memory limit, it is terminated with an OOMKilled status. Similarly, if overall memory usage on all…
Alechko
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How to find memory buffer size limits in SONiC OS?

As per info from Juniper about memory buffers here, a switch memory is divided into 2 main parts: Dedicated buffer and Shared buffer. The memory allocated for a Dedicated buffer is equally distributed among all ports, and Shared buffer memory is…
Antonio
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The first few messages are lost when transmitted to mqtt clients that were offline

I have vernemq server and mqtt clients using paho mqtt library (with python or C - no matter). Both subscribers and publishers use Qos2 and clean_session == False. So the problem is when subscriber is offline, I try to send some messages. Some of…
Александр Тиняков
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MQTT QOS 2 with multiple QOS 2 subscribers

I am using MQTT V5 in my project and I have a business requirement as follows: “Publisher shall receive acknowledgment from the subscribers confirming that they have successfully received the publisher’s message”. Notice that this IS NOT AT ALL the…
Ale
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Clarification on Kubernetes QoS relation to scheduling

According to https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/ Kubernetes uses QoS classes to make decisions about scheduling and evicting Pods. I don't understand how do QoS classes have anything to do with scheduling?…
woj.sierak
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How to check how well my traffic control rules are working?

I am a bit new to network traffic control. I have been tinkering with the tc command and iptables in linux and have been testing them by not so convenient methods, like for instance, for congestion, putting multiple heavy files on upload. Is there a…
RasenRhino
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How to do TOS/DSCP in ruby?

How does one set the TOS flags/DSCP flags in Ruby on a UDP/TCP stream (preferably using the Ruby/Sockets library)?
Deadolus
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Android call quality

it's possible to get or to measure the call quality during a voice call in Android? The ideia is to know the distribution of quality audio during a call by location.
jlopes
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DDS Reader not dropping messages

I am learning about DDS using RTI (still very new to this topic) . I am creating a Publisher that writes to a Subscriber, and the Subscriber outputs the message. One thing I would like to simulate is dropped packages. As an example, let's say the…
Alex
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How and when are QoS access classes assigned to packet transmitted over wifi?

There are 4 queues in WiFi system for QoS- 1- voice 2- video 3- best effort 4-background How are these access classes assigned to packet transmitted over wifi ? Can we differentiate two voice services (say Skype and Whatsapp Video call) to provide…
Abhishek Tiwari
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Installing NDIS 6 LWF filter driver interrupts networking in Windows Server 2019 when QoS enabled

On Windows Server 2019 Datacenter, installing any NDIS 6.0 LWF filter driver results in a network interruption. This is noticeable on Azure instances because the RDP connection drops. We have seen this with our own filter driver, but we have also…
bonsaiviking
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