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

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581 views

Very low latency streaming

I'm looking to stream a live lecture into an overflow lecture theater. I'm planning to stream HD content along with audio from a powerful server with nVidia GeForce GPUs connected to the client via a ...
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2answers
795 views

How to increase transfer speed on fat long pipe?

I have a log pipe between two facilities (gigiabit circuit with RTT latency of 17ms). When doing system-to-system file transfer (file sharing, rsync, ftp, sftp) I'm hitting maximum speed of approx 30 ...
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2answers
255 views

Ping spikes in Windows 7

This is what my average latency looks like. Request timed out. Reply from 74.125.224.198: bytes=32 time=470ms TTL=53 Reply from 74.125.224.198: bytes=32 time=31ms TTL=53 Reply from 74.125.224.198: ...
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2answers
264 views

Internet lags for me, but not for my brother

Recently we had a new switch setup in our basement, plus my PC has the newest parts oldest dating 2012. When I play games that requires instant responding like Counter-Strike, League of Legends, FIFA ...
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2answers
385 views

Having trouble streaming music over my WLAN through iTunes and Apple TV

My wife recently purchased me Apple TV for Xmas and I am trying to set it up so it can access my music over a wireless network and I am experiencing network latency issues when trying to stream music ...
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1answer
328 views

Experiencing lockups due remote system Hard drive being shut off

Whenever I open a homegroup folder on another computer on my network, and the remote harddrive has to spin up, windows explorer seems to lock up until the remote request completes. This affects ...
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1answer
131 views

Vim write latency in tmux

I have noticed that, while using Vim in tmux over an SSH session, when I write a buffer to disk (i.e., :w) occasionally, while Vim says it's been written, the file remains unchanged. In fact, often ...
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1answer
125 views

How do I optimize Windows disk I/O for high-latency throughput?

Let's say there are 25 processes each which want to read and index a large (say, 1GB) file. The hard drive may be capable of ~100MB/sec throughput, but the head movement and rotational latency ...
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1answer
55 views

Download speed and ping suffers during PC to PC file copy

Why does the ping and internet download speed suffer on PC#1 when files copied from PC#1 to PC#2? During file copy, my ping goes from 20ms to 600ms+, Download speed goes from 1.8MB/S to 250 KB/S give ...
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1answer
165 views

What changes to my network settings in Windows 7 can I make to achieve lower latency for gaming?

What changes to my network settings in Windows 7 can I make to achieve lower latency for gaming? I have heard of changing TCP settings in the registry, but I have also heard conflicting information on ...
0
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1answer
424 views

Wireless Router - Losing Connection, Very Low Speeds - Cause?? Test Results

Looking for answers to an ongoing problem with wireless internet through Time Warner (TWC). There have been 5 technicians out and they can't figure it out. I found a link on this forum suggesting ...
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1answer
125 views

How much of a difference would it make if I switch out my current Corsair 1600MHz CL11 DDR3 for 2000MHz CL9? Especially for the game PlanetSIde 2

I recently bought two modules of 8G (16G total) Corsair Vengeance Series memory Specs: 1600MHz CL11 DDR3. System Specs: i7 4770K to 4.0GHz ASUS GTX 770 MSI Z87 ZMPOWER MAX During most of the ...
0
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1answer
316 views

how to improve DPC Latency Checker times?

I'm using HP DL360p Gen8, 2 * E5-2640 and Windows Server 2008 R2 SP1. My friend is using HP DL160 Gen8, 2 * E5-2640 and Windows Server 2008 R2 SP1. We both made fresh Windows install, updated all ...
0
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1answer
351 views

Troubleshooting “bursty” network traffic

I've been having a problem with my Internet connection ever since moving to San Francisco, and it's driving me absolutely up the wall. After using my network connection for anywhere between five and ...
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1answer
908 views

Determine which computer on LAN causes network problems

I have a simple question, is there any way to determine which computer on LAN is causing network problems? (virus on on of them maybe) Like 10 minutes of 30 minutes of playing online game my ping ...
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0answers
196 views

Stuttering/Latencies when LAN/Ethernet Driver active

I experience heavy video/audio stuttering when playing a video or general latencies when downloading a file when connected via LAN/Ethernet NOT when connected via WLAN/Wifi. According to my ...
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0answers
371 views

How to reduce latency on FFmpeg video streaming?

On a video streaming application between Linux server (FFmpeg) and Windows client (VLC player), there is a noticeable latency of about 10 seconds. FFmpeg command: ffmpeg -re -f v4l2 -i /dev/video0 ...
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0answers
5k views

How to fight network latency and jitter issues on Wifi?

I'm having problems with my Wifi connection. I did a test on PingTest.net with the following results: Packet Loss: 0% Ping: 103ms Jitter: 29ms Same test but from another machine on the network ...
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0answers
22 views

Possibly a bufferbloat?

not very long ago ive noticed high latency and slowdown in responsiveness in my network. what is weird is it seems to only occur from 10 am to 10 pm (been this way for a week now). 10 pm onwards it ...
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0answers
55 views

What's the theoretical latency of 802.11ac?

Inspired by this slide, I became curious to know the (theoretical) latency of the latest WiFi standard. However Google didn't help. This ppt's 8th slide, compares latency of 802.3 (3000 microsecs) ...
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0answers
326 views

How can I reduce latency on VLC

I 'm working on a video streaming application. Server is a Linux machine (ffmpeg-ffserver) and client is a Windows machine (vlc player). There is a latency of about 6 seconds. Despite the fact that ...
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0answers
814 views

Why would dropbox cause an increase in Latency

I am trying to figure out why Dropbox seems to be completely disturbing my internet connection and if others may be having the same problem. When Dropbox is idle, I ran a speed test. I get a ping to ...
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7 views

How to approach searching for sources of interface unresponsiveness

On Debian Linux: On a relatively powerful machine I ran an update and both the kernel and the window manager got updated to newer version. At that point the machine become noticeably less responsive: ...
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0answers
225 views

More latency using VLC than java browser plugin reading a video streaming

I am trying to see a video streaming in my PC from a mobile phone camera using Android and IP Webcam and I am able to do it but I have a problem with VLC. Runs correctly using VLC and java browser ...
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0answers
386 views

alsaloop: What happens on a buffer underrun?

I am tuning my sound interface latency with alsaloop -C hw:1,0 -P hw:1,0 -t $LATENCY_US When I set $LATENCY_US to 30000, I get around 20% CPU usage. I can restart this a few times and make some ...
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0answers
420 views

Chrome Experiencing High Latency and Low Download Speeds

In the last week, Chrome (latest version, 24.0.1312.57) on Windows 7 (64 bit) has severely deteriorated in download speeds and latency. Using speedtest.net, Chrome is currently receiving ~2.5mbps down ...
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0answers
147 views

Wi-Fi very slow except for when another computer uses it

We recently moved to a new home in a new state, with a new ISP. I'm a software guy, and I work from home frequently through the vpn, so I ordered the fastest connection they have. Everything works ...
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0answers
108 views

high latency on LAN

I have setup a LAN using mac airports and the nodes are macminis. The OS is Lion 10.7.3. the macport connect to the Internet using cable and the internal connection is wireless. I tried to ping each ...
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0answers
216 views

Is data transfer through a WPA2 protected ad-hoc network slower as compared to a unsecure one?

We play multiplayer LAN games on our laptops by creating wifi ad-hoc connection (sometimes protected to ensure no one other than whom we want to, joins in). Now my question is how much using a secure ...
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0answers
293 views

Confusing relation between RAM frequency and timings

I'm confused with relation between frequency and timing information when buying DDR3 RAM modules. I have OCZ DDR3 modules which should have 1600MHz frequency and CAS 7-7-7-20. If I use these modules ...
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0answers
744 views

Win7 -> Server 2008: Mapped drives take a long time to open

First, the configuration: I have a desktop and a laptop running Windows 7. I have a server running Windows Server 2008 Enterprise Edition. The workstation and server connect to the same Gigabit ...
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24 views

DPC Latency checker tool analog for Linux

I'm using my server for HFT trading. I like DPC Latency tool http://www.thesycon.de/deu/latency_check.shtml because it allows me to check that "everything allright". On the well-tuned Windows machine ...
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20 views

Testing network application with virtual network and artificial latency

In order to test a network application in a controlled manner I want to create some sort of virtual network on a single machine in which I can control latencies. (I am running Ubuntu 14.04 x64). I ...
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42 views

Should I change my notebook Wi-Fi card?

I saw a lot of topics about Wi-Fi, noisy, high round-trip time (RTT). I do made some troubleshootings and I conclude that maybe I need change my mini PCI Wi-Fi card. My OS is Windows 7 x64 and the ...
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0answers
40 views

Why do I get these latency spikes in games? How do I fix them?

http://pastebin.com/VkisYYMw Results of ping to a LoL server, results are similar to a Dota 2 server. As you can see, the ping flares up going as high as 500 to 600 ms at times. I have tried ...
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309 views

What is a good WLAN ping time on a clean network?

More specifically, what is your local WLAN ping time (e.g., between a host on the WLAN and your router, or between two hosts on the WLAN, divided by 2)? I had assumed it would be well under 1 ms for ...
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0answers
131 views

I'm having DPC latency issues with my computer

The LatencyMon report will be added to the end of this. I recently got a modi and magni amp and dac combo and I've had audio stuttering issues. Here is a image of all my drivers I was told that I ...
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34 views

Why do I experience latency to certain IP's

This one has me stumped. I read a lot and ask very few questions. I usually have 2 or 3 SSH sessions at any given time. Monitoring applications, working on server configs that type of daily grind. ...
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0answers
217 views

What are the requirement for smooth voice chat with Skype?

In our country, Internet is very expensive. In comparison to that, I have a fair Internet connection. However, I experience choppy sound, lagging, etc. when making voice calls using Skype. I use a ...
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176 views

Maximum and Minimum Latency /Transfer time

how would i calculate the maximum and minimum latency and transfer time when I am only given that the hard drive rotates once each minute and each track has 10 sectors?
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455 views

Very high latency with Verizon DSL

At any time in a given day, my ping could be anywhere from 60ms (already too high) to over 1000ms. I've contacted Verizon support numerous times, but it doesn't seem anyone in the tech support center ...
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0answers
116 views

Comcast connection

I have had Comcast for about a month and up until Friday I havent had one complaint. As of Friday I started noticing massive lag while playing Tera, which is a MMO. I started up a ping -t ...
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0answers
169 views

Which RAM configuration for a desktop upgrade?

I am trying to increase the RAM of my home computer, but I am unsure as to how much each aspect of RAM should be weighted (as to which is more important). My motherboard has 6 slots, so I believe it ...
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0answers
423 views

Calculating DRAM Timing Parameters from Latency

Let's say that we're looking at a DRAM with typical timing parameters (those of interest are listed below) with read and write latencies of ~20-50 nanoseconds. How would one go about changing the ...
0
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0answers
458 views

Windows 7 Line In Delay Issue

I'm running Windows 7 Pro 32-bit on my Dell Latitude 2100 netbook and I'm having an issue with the line in device/driver/functionality. The device & driver are stock: Driver Date: 7/13/2009 ...