Questions tagged [latency]

Latency is the time difference between the start of an event and the time that the effects become noticeable.

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Sudden jumps in internet latency

For the past 2 months I've had some weird hitches on my internet. Every so often (about 5-15 minutes) I get a single short spike of high latency. Below is a capture of the previous 200 ping results. (...
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How to optimize VPN connection for low latency / ping

I am using a VPN (IPSec) connection to my home router to work on the road and access my home network. Now while having most times a good bandwidth, latency/ping isnt always great. Hence I was ...
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How to objectively measure RAM latency impact on performance

I'm already aware of these questions: how to know if RAM is my bottleneck How to determine if CPU or RAM or DISK is the bottleneck on Windows 7 How can I know if the speed of RAM is the bottleneck ...
Raf's user avatar
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Jitter/High Latency in Windows UDP Stream

I have been using UDP/WiFi to pipe data between an embedded device (ESP32 acting as a UDP server) and my Windows machine. My objective is to send as many short packets (8-64byte payloads) as ...
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Identify latency problems to gaming server

I am playing an online game where the server is physically located in the same city (~10km=6miles). I have cabled internet with WiFi and have a ping around 170-200ms with severe spikes. From my phone ...
Pontus Hultkrantz's user avatar
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SODIMM timings vs DIMM timigs

I try to google it but there is no information about why timings of DIMM DDR4 3200MHz is better (lower) than timings of SODIMM DDR4 3200MHz ? I just found that fact on marketplaces, but there is no ...
Dmitry Groker's user avatar
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Reroute and tunnel udp connection to another server

I have been trying to establish a connection between a vps and a dedicated bare metal server for a month now. Basically, vps will act as a tunnel to connect to my dedicated server, I'm doing this to ...
Jhezreel Gellado's user avatar
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Curl Vs Spring RestTemplate.exchange - huge performance diffrence

Under what circumstances a Restful call made with curl would be much faster than Spring's RestTemplate I have to use Spring's RestTemplate's exchange methods as I am sending a JWT token as an Http ...
user721025's user avatar
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Is this keyboard latency test accurate for both PS/2 and USB keyboards? How can I test the latencies of keyboards?

I plugged in my old PS/2 keyboard while getting my USB keyboard clean and dry, and I think I feel it has lower latency, and I want to test the latencies of the keyboards now. According to the test at ...
Idleavemypcwhenitdies's user avatar
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Single channel CL9 vs dual channel CL11

I have to upgrade the DDR3 RAM of an old PC. At the same price, do I get the best performance with a single channel cl9 or a dual channel cl11? Both 1600MHz
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Seeing huge latency using FFMPEG to send RTMPS

Seeing huge latency when running FFMPEG to (re)stream camera RTSP stream into RTMPS. Running the same command using RTMP works fine without any latency. Below are the commands used in our testing. ...
Lipphei Adam's user avatar
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SSD Latency over USB

I've just learned that (internal) SSD latency is in the ballpark of some microseconds (1/1000th a millisecond) and HDD latency is in the range of milliseconds. I went out and bought a USB-C 3.2 Gen 2 ...
Daniel's user avatar
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CL9 dual channel vs CL11 quad channel

I have to upgrade the RAM of an old PC, for the same price I can buy two kits: four 4GB CL11 modules or two 8GB CL9 modules, both at 1600MHz. which of the two options gives the best performance? The ...
Franz's user avatar
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SATA SSD Latency using ioping

SATA SSDs are expected to have latency in the range of a few hundred microseconds, but when I measure it using ioping, the latency is around 2ms. Is there any reason for such high latency in SATA SSDs?...
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6sec latency dragging a few images in Explorer, Windows 10

Recently bought a second hand Thinkpad P51, and did a clean install of Windows 10. Compared to Windows 7 on far inferior laptops, Windows 10 and Explorer specially is extremely sluggish. To drag 10 ...
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High ping on singapore servers

I have a PTCL fiber connection in my house and in the previous month i have seen that sometimes i used to get 120ms on singapore and sometimes 200ms but now i am getting 300+ ms. following is a ...
EXTON's user avatar
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High latency and inconcistency on all (if not most) wireless networks

Some time ago I reinstalled windows 10 on an HP Laptop (14-ac129la) because I installed an SSD. After three or four months after I installed the SSD, the owner started experiencing a constant slowdown ...
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Extreme Citrix Desktop Lag/Latency

My wife and I work identical jobs, remotely from our work-supplied laptops. She experiences extreme lag while in the Citrix desktop environment, and I do not. It is extremely difficult to do her job ...
Andrew J's user avatar
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Windows 10 - performance issue: randomly occurring latency at basic tasks (opening a window, reacting to keys type or mouse click)

The PC: HP Envy 15 Latop Intel(R) Core(TM) i7-4702MQ CPU @ 2.20GHz (bought around year 2015) upgraded ~2 years ago to SSD HDD & 16 GB RAM current Windows 10 installed at that moment, automatic ...
Serban's user avatar
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How to specify TCP congestion algorithm to use for my long running rsync process?

I have a huge rsync task where I'd like to syncronize file colletion of my workstation and remote server (rsync over ssh). I assume the whole process to take weeks so I don't want to cripple my ...
Mikko Rantalainen's user avatar
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How can I view how much lag / CPU time a Google Chrome extension adds when loading a page?

For example, I would like to know how much lag / CPU time the Google Chrome extension Dark Reader adds when loading the webpage How are pseudorandom and truly random numbers different and why does it ...
Franck Dernoncourt's user avatar
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180 views

Intermittent latency / lag in games and video conferencing (every 30 [33] seconds)

After using a decent tier laptop (Lenovo Yoga Slim, AMD Ryzen™ 7 4700U CPU, 16 GB LPDDR4x RAM, 512 GB M.2 PCIe NVMe SSD) for a couple of months my wife started to get latency spikes in League of ...
olahell's user avatar
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Streaming HEVC SRT from ffmpeg to ffplay through ethernet, how can I determine latency and cpu usage of each step?

I'm streaming desktop capture from a Windows 10 computer indirect display on two monitors to a Raspberry Pi 4's two hdmi output ports. Now the RPi 4 is getting maxed out on the cpu when running two ...
Shodan's user avatar
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Does upgrading RAM with different Speed, affect the pc or affect all the RAM?

I have 4gb RAM in my system. I went to shop for upgrade. They told he has different number like "2666" but in my system RAM its number is different. So we need to wait to get exact number ...
sire's user avatar
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Why using a GPS usb stick increases the latency of my WiFi connection?

I noticed an increase in the latency (+- 20ms) of my Wifi connection when I'm retrieving in the same time the GPS location of my notebook. I paid attention to get the location via the GPS usb stick ...
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High latency when browsing web but dramatically reduces when using VPN

I generally have high latency when browsing web from my home internet connection. The connection itself is reasonably fast and I normally get ~120 Mbps of download speed, but the latency is often in ...
NotAName's user avatar
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Does Checksum Offloading affect latency in a good way? Does it vary depending on cpu power?

I'm trying to get an understanding of the settings that you see when you go to the advanced options of a typical intel or realtek networking card in your windows device manager. A lot of those are ...
JH86's user avatar
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What might be causing periodic audio pops and crackles in certain Windows 10 applications?

I have an Intel NUC10i7FNH computer, purchased in December 2019 and running Windows 10. Within the last year, it has started to produce audio crackles and pops during many different types of audio ...
Steve Guidi's user avatar
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How to diagnose Windows 10 latency despite hardware capacity

How can I hunt down a bottleneck in Windows 10 when no hardware resources are overtaxed? I have a Windows 10 Pro workstation with pretty extreme hardware (24 physical cores, half terabyte of RAM), yet ...
Paul Smith's user avatar
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Avoid mistaken "double-click" non-response when clicking a Windows taskbar tab and immediately clicking it again to send to background?

When I click a taskbar tab to highlight that program's window, sometimes I only want a quick peek, and so I quickly click it again to send it to the background. Unfortunately, Windows treats this as a ...
Twinbee's user avatar
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Fixing high latency on a single device on a wired LAN

I have a device on a wired LAN that has really, really high latency on a ping. 599ms and higher. I cycled power to the device and the latency dropped back to <1ms. That lasted for about three days ...
Ziggy32's user avatar
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3 votes
1 answer
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Nvidia Container causing audio popping and Explorer lag

I have been having this issue where my audio starts popping and crackling quite frequently (tried various audio devices, not specific to one device) and Windows Explorer generally becomes laggy and ...
Banana999's user avatar
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Why is a request via my reverse proxy faster than a direct connection?

I have an ESP8266/ NodeMCU connected to my wifi which I used to make my fan a smart home device. It has a very simple HTTP server running, which allows me to send GET and POST request to get or change ...
Jojomatik's user avatar
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Issue with Computer Clock (or perhaps LAN)?

I am experiencing a very strange behavior for which I struggle to identify the source, but assume it's the computer clock. Here is the setup and synopsis: I have two computers on my home network ...
Peter K.'s user avatar
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2 votes
1 answer
654 views

Audio freeze, buzzing crashes Windows 10 with Blue Screen Of Death

Lately, I have been experiencing multiple blue screens of deaths, game freezes, audio buzzing, complete blackouts of the screen. I have updated to the latest GPU drivers, audio drivers, latest BIOS ...
EDJ's user avatar
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1 vote
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183 views

High variance of SSH connect latency

I am trying to SSH to a remote server. Sometimes I connect quickly in under a second. Other times, it takes much longer - between 7 and 25 seconds. I tried running with ssh -v for debugging. When it ...
Jacob Stern's user avatar
4 votes
2 answers
10k views

Does a USB-C ethernet adapter have a higher latency than a regular ethernet port?

Unfortunately, my new gaming laptop does not have a physical ethernet port. Will a USB-C to ethernet adapter produce the same latency(ping) as a physical ethernet port would? Also, how much CPU would ...
Johann's user avatar
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At random times, random internet connections lag out indefinitely

I have had this problem for 4 years and it has persisted through two households, two computers and two ISP's. The only constant thing has been my router which is why I have a hunch that it's the ...
user810259's user avatar
2 votes
1 answer
2k views

If you run fast RAM at a slower clock speed, will the latency timings improve?

I am buying a motherboard and CPU that support DDR4 2400 memory. For approximately the same cost, I can buy either of the following two types of memory: DDR4 2400 memory with timings of 16-16-16-39. ...
mpb's user avatar
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1 answer
846 views

System interrupts/DPC/ISR appear to be causing sound distortion in Windows 10. How can I determine the root cause?

I am having problems with audio distortion in Windows 10, but it varies in severity between apps. Foobar2000 is very heavily distorted on most tracks, with buzzes and skips. Windows Media Player also ...
Stonecraft's user avatar
1 vote
1 answer
95 views

Reducing Wi-Fi Latency

I've got a good wi-fi connection with only 4ms ping time to my router: PS C:\Users\bobuhito> ping 10.0.0.1 Pinging 10.0.0.1 with 32 bytes of data: Reply from 10.0.0.1: bytes=32 time=4ms TTL=64 ...
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Can you purposely delay the sound inside the Windows OS backwards?

I got a pair of google max speakers which are hooked up via a 3.5 mm jack but they stream the audio input to each other and split it into a right and left channel which introduces a delay of 1 to 1.5 ...
MaxPower's user avatar
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217 views

looking to improve qaulity for video output

For the last 5 years I have been streaming a live stream 24/7 from a streaming studio which requires low latency rtmp output to a web based player client. I am using vMix to capture my sdi signal from ...
TLM's user avatar
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2 answers
1k views

Is there a way to stream audio from Windows to macOS with low latency?

I'm looking for a way to stream audio from an application or system output device on a Windows system to a mac over my local network. I need it to be high quality and low latency (less than 50 ms). If ...
Bri Bri's user avatar
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1 answer
375 views

Ping too low between Europe and US [duplicate]

I'm pinging (from Europe) an IP belonging to Firebase's CDN via this command: ping 151.101.65.195 I get the following result: PING 151.101.65.195 (151.101.65.195) 56(84) bytes of data. 64 bytes from ...
Attila Kun's user avatar
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3k views

Using ffmpeg to send video-stream to IP on local network with UDP

I have a project going on where I want to end up having one host computer (H) able to do a lot of heavy duty tasks, and one client computer (C) sending inputs to H and receiving a video-stream of what'...
RoyM's user avatar
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High ping latency when playing online games

I switched to a WISP (fixed wireless) internet provider to improve internet speeds. I now have up to 30 MBPS. When playing multiplayer online games ping latency shoots up to 500+ ms. Why does the ...
Sal's user avatar
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High network latency caused by windows server 2012 R2 computer

Okay, so, this is a weird one. Recently I noticed I’ve been getting extremely high latency (ping) reads, especially when gaming but seemingly in random times, with pings exceeding 2000ms and even ...
ScubaDiving's user avatar
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158 views

Network speed horribly slow only between two specific nodes

I have a VPN in which (mainly two) clients communicate with each other. I realized that the throughput between two of the clients is extremely low ((2) -> (1) in the picture below) in one direction ...
Ercksen's user avatar
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2 votes
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891 views

Adjust Hyper-V Keyboard Latency

I have found that copy/paste from my host machine into a Hyper-V instance is not working consistently. The issue is specific to physical copy/paste buttons on my keyboard as opposed to using a two key ...
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