Questions tagged [bandwidth]
Bandwidth tag should be used when asking questions about data transfer rates over various data buses or network protocols.
791
questions
1
vote
0
answers
38
views
Achieving 1Gb/s using PCI (not express) NIC
I am using an old PC (Phenom II x940, 3GB of ram) as a NAS. The motherboard's build-in NIC was only 100 mib/s so I bought a used Intel Pro/1000 GT (connected via PCI (!) - not PCIe) to achieve better ...
- 111
0
votes
0
answers
10
views
iPerf UDP no loss but Client/Server bandwidth don't match?
No major loss of datagram occured, but the server bandwidth is extremely low, and don't match the client side, why?
Client command: iperf3 -c 10.255.0.2 -p 5001 -t 10 -i 5 -l 60k -u -b 15G
[ ID] ...
- 1
0
votes
0
answers
20
views
Debug slow home network
I don't know how to approach this problem. The TL;DR is that my internal home network is "slow". Here is the setup:
I live in the UK. I have a Sky ER115 router
Directly plugged into the ...
- 143
1
vote
0
answers
24
views
How can I further identify and fix network speed slowdown on home LAN?
I have been trying to troubleshoot a home LAN throughput issue. I have an Asus router with two boxes, a Windows 11 PC and an Unraid Linux server, connected directly with cat6 cables to 1Gb ports. The ...
- 11
0
votes
1
answer
68
views
Cable modem speed limitations
I have been doing some research on different modems and I am getting quite confused about some of the speed numbers in the product specifications. Below are some examples from Motorola modems.
If you ...
- 101
0
votes
0
answers
36
views
Intel AC8265 simultaneous STA + AP performance issues
I have an Intel AC8265 wifi card that supports simultaneous AP/STA:
valid interface combinations:
* #{ managed } <= 1, #{ AP, P2P-client, P2P-GO } <= 1, #{ P2P-device } &...
- 194
0
votes
0
answers
37
views
QOS bandwidth error in LB-Link Router
I'm trying to limit my phone bandwidth in LB-Link Router to (24mb/s upload, 49mb/s download)
LB-Link uses kb/s, according to Google, (49mb/s = 392000 kb/s), but I get the following error
"The ...
- 33
0
votes
1
answer
32
views
Network usage monitoring per device
I have LTE modem connected via ethernet to TP-Link archer ax20. I have 400GB monthly limit and i see that from some time internet usage increase. I want to start monitoring internet usage by device to ...
- 1
9
votes
2
answers
1k
views
Is 2.4 GHz Wi-Fi band shared across routers?
When having a router with a 2.4 GHz connection, I understand from my previous question that it will be slower than a 5 GHz one, but I am confused on the following:
Is the 2.4 GHz more congested due to ...
- 197
0
votes
1
answer
46
views
Router bandwitch vs ISP bandwith
when I am using a router for example of 300Mbps, and i have a download speed of 100Mbps and 25 Mbps of upload, when i am connecting to internet, is this speed affecting my lan bandwidth? for example, ...
- 3
2
votes
0
answers
153
views
Poor network performance over internet, but flawless iperf3 results
I'm using a linux system as a router/firewall, with the following kernel:
Linux gentoo 6.0.8-gentoo-stripped-wireless #1 SMP PREEMPT_DYNAMIC Tue Nov 15 08:54:22 CST 2022 x86_64 AMD FX(tm)-8150 Eight-...
- 198
0
votes
1
answer
44
views
Laptop as wifi repeater is slowing down internet speed
My laptop has 2 wireless cards, onboard wifi, and USB wifi (3 dbi high gain).
I have set up USB wifi to connect to access point, and onboard wifi as a hotspot (nmcli AP mode, named HostedAP).
...
0
votes
0
answers
69
views
Measure average bandwidth and latency of program macOS
I have a program I have made and I want to analyze the performance of said program, specifically the impact of the network connection. The program will send multiple requests to one API (incase that ...
- 1
0
votes
1
answer
211
views
How do I monitor real time USB bandwith in windows 11?
Many suggest USBDeview but I do not see where that app displays any bandwith information. All I want is a way to monitor how much of the 480mb/s of my USB 2.0 port is being used and by which devices. ...
- 1
0
votes
0
answers
23
views
How to fix unintentionally bandwidth sharing of 2 different fiber optic lines?
I have 2 different fiber optic lines on 2 separated accounts, separate routers but of the exactly same model from the same ISP. They both have their own IP address. The problem is that when I upload ...
- 83
0
votes
0
answers
113
views
iperf3 speeds not symmetric on multiple adapters in Windows 10?
I ran iperf3 between two Windows machines and noticed that the speeds were not symmetric. I tested using both the built-in 1-gigbait Ethernet adapters in each machine as well as with 10-gigabit ...
- 1,208
0
votes
0
answers
16
views
What are the network requirements for up to 15 clients using Zoom simultaneously
We are planning on running a "virtual mentoring" club at a youth community center this fall. Students will each join a zoom session on their laptop w/ headphones and talk with mentors in a ...
- 185
0
votes
2
answers
151
views
How can I calculate necessary WiFi bandwidth based on # of devices at home?
For my home network, I'm trying to set up a Wifi 6 mesh network.
My internet provider subscription gets me 150 Mbps officially, but in practice runs up to about 260 Mbps (max. measured over Wifi 5GHz)....
0
votes
0
answers
67
views
Set minimum bandwidth for Browser
I want to download Games in the background while watching videos/streams on Firefox, but my video always stutters because Steam, EpicGames, etc take all the bandwidth. Can I set a minimum bandwidth ...
- 1
0
votes
2
answers
35
views
How do I determine why my Windows 10 bandwidth is so much lower than my Macbook Pro?
I'm using a Windows 10 machine (Dell Precision 5560 PC) and am noticing that my bandwidth (at least measured by speedtest.net) is 4 to 5 times lower than my MacBook Pro 2017, both on the same network, ...
- 62
0
votes
0
answers
33
views
Implementing QoS with an ASUS RT-AX86 series router with a daisy-chained router
I'm reading about the quality of service functionality provided by an Asus router. My use case is that I have a home wireless network with 3 roommates whereby I want ensure each "user" of ...
- 123
0
votes
0
answers
369
views
How to limit individual egress bandwidth of application processes where each processes create a separate connection?
I have a file transfer application written in Python where a multitude of files are transferred. In the python application, multiple process are created and each process opens a separate socket and ...
- 11
0
votes
1
answer
2k
views
Does DisplayPort 1.4 support 4K@144Hz HDR?
I bought an Asus PG32UQ monitor recently and connect it using a mini DP (eDP 1.4) with my HP ZBook Fury 15.6 Inch G8. And to my surprise, I can run at 4K on 144Hz with HDR enabled.
This is a bit ...
- 185
0
votes
0
answers
566
views
Bandwidth Speed Testing W. Wireguard VPN Connected
Question:
How can I measure the connection speed between my wg vpn client and wg remote server?
Without my vpn client, I can use iperf.
However, with my vpn connection iperf returns:
username@machine:~...
- 267
0
votes
1
answer
7k
views
Bandwidth Control with Queue in Mikrotik
good time
I set a bandwidth limit in Mikrotik(simple queues) for each IP, and now I need to set a general bandwidth limit for each of my networks.
My question is how to set a 10M limit for a range ...
0
votes
0
answers
39
views
What is a reliable way to check how the quality of WiFi internet connection varies with time?
At the shared house I live in, internet seems to work fine. For instance, I seem to have no issues when watching a movie on Netflix or a video on YouTube, or when I download some document or other ...
- 179
1
vote
1
answer
1k
views
Terrible Windows iperf performance
I'm having a weird issue that's totally stumping me. The performance of 10G ethernet on my Windows computer is poor in the incoming direction from one computer, and exceptionally poor from another. ...
- 1,632
1
vote
1
answer
91
views
How to ACCURATELY Measure ACTUAL BANDWIDTH Performance of a Full-Fibre FTTP Broadband Connection
I have an 80MB Down / 20MB UP FTTP broadband connection.
I did a an Internet Speed Test and this reported a performance of 43 MB. Review of bandwidth and CPU usage on the router didn't account for the ...
- 353
0
votes
1
answer
196
views
Would WAN traffic affect LAN traffic?
Say I have a PC and a NAS connected to a router. On the PC I downloaded a file through torrenting. Now I want to both seed the file and locally upload it to my NAS at the same time. Would the two ...
- 1
0
votes
0
answers
55
views
Internet not working when lower bandwidth is used, works with higher bandwidth
So I will try to explain this as clear as possible.
My internet works just fine when I need to use more than 1M/s for example when watching YouTube,(both my phone, for WiFi, and my pc for Ethernet are ...
1
vote
0
answers
18
views
Eliminate bandwidth bottlenecks between far-away computers
Our office location (in Karlsruhe, Germany) has fiber-optic internet access with 500MBit/s upload and download speed. This speed is confirmed by e.g. https://www.speedtest.net/ (reaching > 400MBit/...
- 443
1
vote
1
answer
312
views
When is power and bandwidth shared among USB ports?
I’d like to know when power and bandwidth is shared among USB ports on a PC.
Let me give an example and please correct me where I may be wrong:
I have a PC with 5 USB ports: three are USB 3.0 and two ...
- 747
0
votes
0
answers
264
views
Can I measure the bandwidth into a USB 3.0 port?
Some background:
On a Windows 10 PC, I have three cameras connected to a USB 3.2 Gen 2 hub, which is connected to a USB 3.0 Root Hub on my PC. I am viewing the video streams using OpenCV in Python, ...
- 201
0
votes
2
answers
6k
views
Can DisplayPort 1.2 support 10-bit (8+2FRC) color at 1440p and 144hz?
Generally speaking, I'm trying to determine if a given DisplayPort version will support difference display modes (resolution, refresh, and color depth). For this specific instance, I'm looking at the ...
- 476
0
votes
0
answers
486
views
Difference in speeds between iperf and broadband speed test
Why would these iperf commands give such slower results to an in browser broadband speed test?
I've tried a few different free iperf servers and they all give similar results. I am wondering if I am ...
- 153
0
votes
1
answer
2k
views
Best WIFI configuration for HG8145V5 (range configuration)?
I'm currently sharing my network with +20 devices, the signal in some places is very poor, the modem is in a high open place, looking at the advanced 2.4G settings I see these options, is there ...
- 3
0
votes
0
answers
87
views
What's the difference between PCI-e size and bandwidth? [duplicate]
There is a note that says :
1x PCI-e x16 slot, running at x4
1x : the number of slots.
x16 : the slot size.
x4 : ???
I know there are 4 sizes (x1, x4, x8, x16)
But also the same numbers for "...
- 23
0
votes
0
answers
493
views
Transferring a 28GB directory with lftp:mirror was slow and caused 4 TB of bandwidth usage
I'm writing this post in hopes to learn what I did wrong. Linux isn't my forte, but I am comfortable with it and do read the man pages when I don't remember how to perform a task.
Hopefully someone ...
- 21
0
votes
1
answer
221
views
Do apps in focus get more network bandwidth on Windows 10?
When downloading large files in the background with a Download Manager, I noticed that whenever I switch to focus the download tab, the speed would increase often by ~1 MBps.
My internet speed is ...
0
votes
0
answers
94
views
PCIe Bottleneck and or Slot Issue?
I have a Supermicro AS-1114S-WN10RT with an AMD 7302, 16 core processor, 254 GB DDR4 3200 ECC RAM, striping data to 6 Micron Pro 9300 15 TB RAID 0 drives located in bays 0 & 1 (D:), 4 & 5 (E:),...
- 1
1
vote
0
answers
90
views
Avoiding packet loss on a 800+ Mpbs data stream
At the highest level of abstraction, I am trying to send 800 Mbit/s from a hardware instrument to a 'normal windows computer' over a dedicated ethernet connection. But if I do so, I experience ...
- 111
2
votes
0
answers
385
views
What's the minimum upstream bandwidth required for ACK packets in a TCP connection?
Consumer internet connections often feature asymmetrical bandwidth with just 10% of even 5% of upstream speed compared to downstream, for example 1000MBit/s downstream with 50MBit/s upstream speeds.
I ...
- 220
2
votes
1
answer
2k
views
Monitor used USB bandwidth in Win10
There are a lot of threads here about monitoring usb bandwidth, however none of them helped me, so that I post my problem here (device manager doesn't show me the usb bandwidth...):
I have a Lenovo ...
- 139
1
vote
1
answer
149
views
scp remote to remote through local bandwidth limit
I have two remote hosts, I need to transfer files from one to another. They don't have routing between each other, so I have to transfer it through local machine, that routes to both.
I can use scp -i ...
- 111
1
vote
1
answer
182
views
Windows 10 priotize program in bandwidth usage over windows updates
there are many questions on different forums asking whether one could turn off automatic Windows updates etc.
But I want my Windows to automatically download Updates etc.
What I don't want is these ...
21
votes
4
answers
9k
views
Why use half duplex at all?
I know what full and half duplex is, but in all respects full duplex has more advantages, so why use half duplex at all, in other words:
In full duplex connection , the bandwidth doubles and collision ...
- 504
0
votes
1
answer
764
views
Mikrotik drop in bandwidth speed
When I connect my laptop directly to my modem and run a speed test I get the proper 500Mb/s speed. However, when I connect my laptop to my RB750Gr3 (which is connected to the modem) my internet speed ...
- 115
-1
votes
3
answers
458
views
Should I buy a switch or a new router to make use of all the bandwidth I am paying for at home?
This is my current network configuration, with the <- bandwith each device is receiving:
- ISP modem-router offering 300 Mbps both by ethernet or WiFi <- 300
- TV (wired) <- 300
- ...
- 368
1
vote
1
answer
1k
views
How to limit inbound SMB bandwidth?
Prologue: This is not a duplicate question. There are many questions and answers about that subject, but I haven't found a single one which deals with inbound traffic and provides a reasonable answer. ...
- 1,657
2
votes
1
answer
89
views
throttling bandwidth for a specific app
I only use slack in linux for chats and messages, not for calls. Yet, I see it eating my network bandwidth to a crazy level for past few days. It may be having something in the background or maybe it'...
- 1