35
votes
Does increasing upload or download speed reduce ping?
Latency is generally independent of bandwidth.
Latency, as commonly measured by ping times, is an indication of how long it takes for your system to send data to another computer and to receive its ...
- 45.6k
17
votes
Accepted
I sometimes get lag spikes causing ping times of 200 ms; might using different (e.g. Google's) DNS servers be better?
The location of DNS servers is irrelevant to network speed.
The DNS server informs your system about the IP address of the site you're looking for.
After that, the DNS is out of the way, the name -...
- 17.1k
9
votes
Accepted
How Do USB 3.0 Hubs And USB Extension Cables Effect Latency, If At All?
I know plugging the 2.0 devices into a 3.0 extension won't take any advantage of 3.0 speeds. But what if they're all connected to a 3.0 hub, connected to a 3.0 cable? Would that cause those 2.0 ...
- 27k
7
votes
Can I run games smoothly on a server via RDP?
You're experiencing problems due to more than just latency. In the default configuration Remote Desktop does a poor job of handling graphics, making even the fastest server or Internet connection ...
- 25.3k
5
votes
How to reduce latency with openssh?
You can take advantage of a tool like Mosh
From Mosh site:
Remote terminal application that allows roaming, supports intermittent connectivity, and provides intelligent local echo and line editing ...
- 241
5
votes
Does increasing upload or download speed reduce ping?
Consider how latency and bandwidth works with hard-copies carried by foot.
Say you have a boxful of hard copies—about as much as you can carry without being significantly slowed down by the weight, ...
- 151
5
votes
Why does Windows not need a low latency or real time kernel?
Neither Windows nor Linux is anything close to a real-time operating system (RTOS) and as far as I know, neither can be made to be so. The goals, requirements, and philosophies of RTOS versus general-...
- 1,425
5
votes
Where does internet latency comes from?
There are a few things going on here – the main one is your figure for the speed of light is off by 3 orders of magnitude – the figure you quoted is meters per second, not km/second.
The second ...
- 67.7k
4
votes
Accepted
What causes periodically high latency on a network?
Hmm, Seems like your wireless signals are getting affected. You can check for the following things:-
Whether there is any interference, check for any radio waves transmitting device. Be it a ...
- 674
4
votes
Accepted
Is dividing latency by frequency an accurate way to compare RAM
Here's an interesting blog post that explores the latency vs speed question: http://www.crucial.com/usa/en/memory-performance-speed-latency.
This article's conclusion:
Which is more important: speed ...
- 316
4
votes
How to fight network latency and jitter issues on Wifi?
The root cause of jitter and latency on a WIFI network is a combination of available bandwidth, number of people using the connection and interference - thus to improve latency you need to improve ...
- 67.7k
4
votes
Can I run games smoothly on a server via RDP?
Given that the server is not located near your computer, the answer is always going to be no.
When you connect to the server over the internet, it will take time for a package to go from your pc, to ...
- 57.9k
4
votes
Accepted
My WIFI connection has high ping periodically
This could be any one of a number of things. The most likely is that you are simply in a noisy (to WIFI frequencies) environment, but it could also be an issue with the card in your PC and/or its ...
- 67.7k
4
votes
Accepted
Which RAM should I prefer (CL vs PC)?
The "PC" number is a DDR module name, it indicates module's data rate.
PC4-17000 modules have 2133 MHz data rate (2133 × 8 ≈ 17000)
PC4-19200 modules have 2400 MHz data rate (2400 × ...
- 55.5k
3
votes
Sporadic high latency on my home network
The symptoms you've reported sound like a bufferbloat problem, where your router, DSL modem, or your ISP's DSLAM buffers too many packets when the link is congested, resulting in high latency. ...
- 100k
3
votes
Wifi Latency : modem or internet carrier?
The first thing I would check is whether the performance improves by using an ethernet cable directly into your router. That way you can rule out the connection to your property being at fault.
If ...
- 1,374
3
votes
High latency when browsing web but dramatically reduces when using VPN
maybe the DNS you are using, when not on VPN, is slow.
How did you measure your latency?
one quick way to test it is to ping a URL and then its equivalent IP address like:
ping google.com
ping 172.217....
2
votes
What's the theoretical latency of 802.11ac?
In wifi, latency varies dramatically with load. 802.11 is a half-duplex medium (only one user can transmit at a time on a given channel), so as more users transmit, it's more likely that you will have ...
- 21
2
votes
How to reduce latency on FFmpeg video streaming?
Add the option ffmpeg with -tune zerolatency and best option using x265 codec, reduce VideoSize 640x480 to VideoSize 320x240.
Lastly, change your player from vlc to ffplay
- 21
2
votes
Low latency keyboards - are they for real?
There is some in depth analysis of latency when typing into an editor. See https://pavelfatin.com/typing-with-pleasure/#input-latency
There is some latency from the keyboard scanning, some from USB, ...
- 626
2
votes
What might cause high latency when bandwidth is saturated?
Google for "buffer bloat".
As RAM became cheap, networking gear added frame buffers so they never have to drop a frame.
Unfortunately, frame drops was how TCP noticed congestion and knew when to ...
- 100k
2
votes
Many Transition from drive PhyRdy to PhyNRdy causing latencies in Windows 7?
This counter in itself is pretty inconclusive, SATA specs are paywalled, but the publicly-available errata define it as:
Identifier 009h
The counter with identifier 009h returns the number of ...
- 426
2
votes
Accepted
I have seemingly fast ping times on my wireless network, but sometimes when I try to access fast websites, resolving host is very slow
What is most likely happening is that you have multiple DNS servers configured (either directly through DHCP, or the DNS server you are pointing to has them), and the first DNS server is timing out - ...
- 67.7k
2
votes
Sporadic high latency on my home network
Somethings wrong. 24hr stats say:
312,600 MBytes Down
247,500 Mbytes Up
You didnt include link rates but 8A at 2KM gives you maybe a 15/5 link. At 5Mb US you could only upload around 55GB/24hrs. ...
- 3,915
2
votes
Why is DDR4 latency so much higher on AMD CPUs than on Intel CPUs? How is performance affected?
Ratio of latencies is not ratio of speeds, e.g. having half latency does not mean having double speed. It has a few percent affection on speed.
Given that we are comparing same types of memory (e.g. ...
2
votes
Networking fundamentals: Does a Gbps LAN has a better latency than a 100Mbps LAN?
Since it takes less time to transmit a packet of a given length, gigabit will have lower latency than 100 mbps.
- 7,769
2
votes
Accepted
Huge latency in the middle of a route between India and Europe
The distance from India to France is in the order of 7000km's, which means a return trip time of about 120ms just on that leg - and I imagine that, reverse DNS notwithstanding, hop 7-8 is the backhaul ...
- 67.7k
2
votes
Why does enabling WMM on a WiFi router cause increase in latency?
The culprit may be Power Save Certification.
From Wikipedia :
The underlying concept of WMM PowerSave is that the station (STA)
triggers the release of buffered data from the access point (AP) by
...
- 176
2
votes
Run a tracert continually for period of time
A quick solution would be to use a self-calling batch script which displays the date and time before doing a tracert
For example
@echo off
echo Doing tracert at %date%, %time% >> pinger.txt
...
- 81
2
votes
Accepted
Latency of SSDs versus HDDs
The latencies of an SSD vary hugely, but in terms of IOPs (which us probably the term you want to google)you are looking at an increase in the order of 2-5 magnitudes. (Ie 100 iops for HDD, starting ...
- 67.7k
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