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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14 views

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 ...
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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 ...
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iperf: avg latency is larger than max latency?

I use iperf to measure the latency between two machines. The configuration is very simple and uses UDP. Server: iperf -s -u -p 50000 -e -i 1 Client: iperf -c 12.34.56.78 -u -p 50000 -e -i 1 -b 1M The ...
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How does loading a large file in memory affect thread latency in multithreaded applications?

Context: I'm developing a multi-threaded software. One thread is particularly time-sensitive. Although it will usually run in real-time, there is sporadically a significant latency. I've been able to ...
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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 ...
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56 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 ...
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32 views

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 ...
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120 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. ...
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Artificially increase ping or latency to test netcode on Windows 10?

I'm trying to test how my lag compensation will work against actual lag, but unfortunately (lol) my internet is too fast to actually notice any lag. Quite the first world problem if you'd ask me, lol. ...
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How to isolate bandwidth issue across multiple hops

We are streaming video from OBS and according to the OBS logs, our bandwidth is inconsistent, causing dropped frames. Our internet connectivity goes from our ISP hardwired into our facility, then a ...
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140 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 ...
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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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SCSIPORT.SYS Causes High DPC Latency

I have an annoying DPC latency issue on windows 10. It happens most of the times and when it happens, the screen freezes for a fraction of a second with a loud buzzing sound, and that continues to ...
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21 views

How to fix the misidentification of a second hotkey

I've been using Alt+Space to launch the Everything app, after which I can type in the new window to search files. After updating to 2004 I've seen an increasing number of occasions where Windows ...
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98 views

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 ...
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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 ...
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360 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 ...
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159 views

Is tRC memory timing really equal to tRAS + tRP?

Wikipedia, among other sources states that TRC = TRAS + TRP Running CPU-Z on my desktop machine would confirm that for 1200MHz mode (50 = 35 + 15): However, that doesn't fit with the Kingston ...
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112 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 ...
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261 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'...
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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 ...
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234 views

How to eliminate delay between microphone and speakers in Windows 10?

I am trying to play back my voice in my own headphones during a call online, but there is about 200 ms latency between the two. It is using the default devices built into this laptop, microphone in ...
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How can I view how much lag / CPU time a Google Chrome extension adds when loading a page?

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 ...
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180 views

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 ...
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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 ...
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301 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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20 views

Need to have second wifi only opt-in

I have a home internet wifi that cuts in and out but has decent bandwidth for most things and my phone can create a hotspot with limited download per month that I've set a separate network card to use....
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506 views

Would a very long HDMI cable and very long USB extension cable affect latency and/or quality?

I am about to do my first PC build, and it's got some really great specs. My computer is upstairs, but I have a 4K TV downstairs and I'd like to game on this computer through that to really get the ...
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96 views

ffmpeg delay in appearing the image

I am using ffmpeg with 264nvenc to transcode streaming channels. the result is very good the channels look great and are very stable, the problem is that when you open the channel, the sound is heard ...
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84 views

Bluetooth mouse latency on linux

I bought a logitech MX anywhere 2S, and I'm using it on Debian 9. when I started using it got a hight latency. I resolved the problem using the following command: su echo 0 > /sys/kernel/debug/...
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97 views

Will a PC4-21300 module be compatible with a PC4-19200 module?

I have two PC4-19200 modules (4Gb each) in my laptop. Both modules are by Hynix (HMA851S6AFR6N-UH) and have a CAS latency of 17. I want to buy a single Kingston module (KVR26S19D8/16, PC4-21300) but ...
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61 views

Latency due to a high GPU usage or throttling is possible?

I'm currently using a Ryzen 3700X and an Vega 64. My problem is related to audio and videos, which suttles and freezes. I downloaded the LatencyMon, and they say that "Your system appears to be ...
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970 views

Mikrotik Hotspot Performance Degradation: So Slow Hotspot Unusable

FAULT: Hotspot created with Mikrotik's "ip > Hotspot" wizard is so painfully slow that it is unusable Googling "mikrotik hotspot slow" returned a gazillion results, none of which resolved this fault....
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2k views

Interleaving, and its effect on VDSL2 latency

(Re-posting from Network Engineering SE, turns out this was actually off-topic there.) Having moved to a new house I hired with an ISP a broadband internet plan. The technician told me I live really ...
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79 views

Insanely high latency when full bandwidth is in use

When I use the full bandwidth my ISP is providing, I get insanely high latency in every website, more than 1000ms. I did a test on 3 of my friends' internet connection, including mine. I took a ...
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36 views

Investigating ping latency

Usually in a LAN I get smth like : Reply from 192.168.1.1: bytes=32 time<1ms TTL=64 with the occasional 10ms. But today on a friend's home I found 32ms consistently when pinging the router. The ...
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1k views

Chrome Developer Tools - Network “Content Download” column

I've got a question about the Chrome Developer Tools - Network Tab - "Content Download" part in the waterfall column. What exactly does this mean? Is latency somehow relevant to this? Retrieving ...
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Monitor performance/latency while copying file across Point 2 point circuit

This is my first post here, i did do a quick search couldn't find exactly what i was looking for. I am copying a file from one server located in NW part of the country to another server located in ...
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75 views

Is memory latency still a key factor in computer speed?

A search on the real-world benefit of low latency RAM seems to yield very old testing done on equally old hardware. Is CAS latency essentially irrelevant now against other performance characteristics ...
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461 views

i want to upgrade laptop ram with compatible timing (CL - cas)

sorry my english not very good this is my laptop (Acer aspire 5 A515-51G-5400) i want upgrade my laptop ram to 12gb with 8gb but i confused about what timing "CL" should buy i have now 6gb in my ...
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1k views

How to avoid Jitter on a LAN network?

I recently acquired fiber connection at home, but I faced an issue, every 10 minutes, the connection kinda stop and then restart. Which cause websites or any software that require internet connection ...
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82 views

Where does internet latency comes from?

Sorry if this was asked before. Couldn't find anything about it on SE. So the distance from San Francisco to Australia is about 8,000 km. This source indicates that the latency among the two ...
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163 views

Wifi Latency : modem or internet carrier?

I would like to know if problems I have in wifi depends on the internet provider or the wifi. Mac OS 10.9.5. Router D-Link. Wi-Fi Frequency 2.4Ghz. The internet providers says the signal is ...
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3k views

Latency of SSDs versus HDDs

We are currently using an HDD for our NetApp storage for our VMs. We're considering replacing them with SSDs, but many disk manufacturers have different performance. What range of latencies can we ...
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1k views

Run a tracert continually for period of time

I have a site where network speed and specific network related activities become very slow. I want to run a tracert from one of the PC's onsite to, say, a file server or print server located at our ...
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Why am I observing periodic latency “spikes” under Linux, when testing over Wi-Fi?

I'm experiencing a strange behaviour when trying to measure the latency between two computers, running Linux (Ubuntu 16.04 LTS), connected to Wi-Fi (5 GHz 802.11n) through a common access point. This ...
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Network Issues and Slow Throughput

Background I worked as a Customer Service Technician at a DSL Provider, when DSL was the "new technology," so I'm approaching the Problem below from that perspective. Problem Note: I've moved this ...
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How can I remove the latency from my USB QWERTY keyboard to play piano with it in real time?

I'd like to use my USB QWERTY keyboard to play piano with various MIDI apps and websites. For anyone who has tried this, the problem is that keystrokes from the keyboard aren't send to the computer ...
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30 views

Regarding Two Devices creating latency on a single switch

I have scripts that run on bootup on two NAS's (let's say they're QNAPs) to create bonds and have different ips for different vlans. ie- NAS 1 (all NICs bonded to 1 via TLB) set bond0 -> 0.0.0.0 or ...
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IPoIB with Netem (Latency emulation) Poor performance

I have to emulate a wide area network. My setup contains two servers with MT27500 Family [ConnectX-3] Infiniband cards. Default latency between both nodes is ~0.4ms and iperf test shows throughput of ...

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