Stack Overflow
Stack Overflow

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."

199 questions
0
votes
0 answers

Prioritising OSPF Packets

I have to give a high priority to OSPF packets so that I do not lose the route and re-initiate. There is too much traffic that it smothers OSPF packets and the device ends up losing the route. The fact that the data rate will be varying every X…
JWhite
  • 1
  • 1
0
votes
0 answers

Cause: rte_eth_tx_queue_setup: err=-22, port=0 while running QoS sample app

While running DPDK QoS sample application for single packet flow configuration as mentioned in Section "122.2. Test Case: 1 pipe, 8 TCs" of https://doc.dpdk.org/dts/test_plans/qos_sched_test_plan.html, I am facing below Tx Queue setup error…
Kanchana Velusamy
  • 1
  • 2
0
votes
1 answer

What Does The of meaning?

the screenshot of libvirt official document What does the of meaning? Is it meaning that the block device of host, or guest?
byteflycoding
  • 1
0
votes
0 answers

How can I set QoS in moquette broker?

I am using moquette as my MQTT broker in my project. I want to set QoS as 0, 1 or 2 and want to see the behavior. Is there any possibility that I can set it using moquette.conf ? Following is the moquette.conf file's content : Moquette Java Broker…
mdanish98
  • 65
  • 8
0
votes
1 answer

How can I set Slurm Partition QoS?

I created partition QOS to my Slurm partition but it isn't worked. How can I solve this problem. If anyone knows, please let me know. The following steps are my operation. CreateQoS $sacctmgr show qos…
masataka.n
  • 25
  • 5
0
votes
1 answer

Adding 2 or more Actions on L2switch for OpenDaylight Sodium-SR4

I am working with L2switch (https://github.com/opendaylight/l2switch). In flow writer (https://github.com/opendaylight/l2switch/blob/master/l2switch-main/src/main/java/org/opendaylight/l2switch/flow/FlowWriterServiceImpl.java) I would like to add…
CobaltRed
  • 37
  • 6
0
votes
0 answers

Is it a violation of the MQTT spec for a client to resend a QoS 1 message from a previous session when cleanSession=1?

The MQTT 3.1.1 spec, section 3.1.2.4 says If CleanSession is set to 1, the Client and Server MUST discard any previous Session and start a new one. This Session lasts as long as the Network Connection. State data associated with this Session…
Andy
  • 7,885
  • 5
  • 55
  • 61
0
votes
1 answer

How to throttle http connection

I am looking for a way induce latency in my http REST connection. I need to find a solution to a an issue on the serveur side which terminates connection when bd connection pool is saturated (no more bd connection object can be created). I tested in…
Nesan Mano
  • 1,892
  • 2
  • 26
  • 43
0
votes
1 answer

DDS QoS: Is it possible to send data without specifying a key?

I am currently using Eclipse Cyclone DDS C++ and I am wondering if it is possible to send data without any key specified with #pragma keylist in an IDL. Is it possible to achive this through QoS-Settings? If so, how?
Kischy
  • 51
  • 1
  • 8
0
votes
1 answer

Increase resources on a Compute Engine VM without shutting services down

To automatically manage Cloud resources in order to meet the felt need of my infrastructure, I need to increase VM resources. But this is possible only while the machine status is TERMINATED. The problem is that I have got applications on the VMs…
Orisa
  • 19
  • 5
0
votes
0 answers

MQTT reliability from producer to broker

I want to simulate guaranteed delivery scenario where connection is unreliable (using mosquitto_pub and mosquitto_sub utilities). Connection can be unreliable on both producer as well as subscriber side. Assume: [Producer] --(1)--> [Broker] --(2)-->…
S2L
  • 1,746
  • 1
  • 16
  • 20
0
votes
1 answer

Which part of the messaging does the MQTT QoS refer to?

I'm very confused when discussing about MQTT QoS. Let's say we have a broker with two active clients, A and B. We want to publish a MQTT message from A, dedicated for client B and make sure client B, that subscribes to this topic receives this…
Nico
  • 151
  • 5
0
votes
0 answers

Can I set global defaults of QoS 2 and ToS 16 to apply, e.g., to gSOAP service?

The source code for soapcpp2.cpp contains a number of calls to setsockopt(), but none for IP_TOS or SO_PRIORITY. If possibly, I would like to be able to have these default to 16 and 2, respectively, to make services subservient to messaging. Is…
Jerry Miller
  • 921
  • 1
  • 8
  • 11
0
votes
1 answer

How can I count the number of http requests outside of a docker container?

I am new to docker and I hope to monitor some QoS metrics of service in a docker container. Does docker provide some API that I can count the HTTP requests to each container with deploy code inside of the containers?
CharlesC
  • 39
  • 1
  • 7
0
votes
0 answers

How to performe deep packet inspection using Ryu controller fot Qos Perposes

I am trying to prioritize voice & video traffic over other types of traffic , i am using scapy to inspect and capture the traffic , i cant find a way to distinguish between those types. the field tos is always tos=0x0 . i am doing this to send a set…
alaeddinebenhassir
  • 13
  • 4
1 2 3
…
13 14