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

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How to reduce latency with openssh?

I'm ssh-ing to a server several thousands kilometers away, and every keystroke takes 500-800ms, so it is getting annoying. Is it possible to have my ssh client cache each line I type locally and ...
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665 views

SSH and Latent Connections (e.g., satellite connections)

Most of the week I live in the city where I have a typical broadband connection, but most weekends I'm out of town and only have access to a satellite connection. Trying to work over SSH on a ...
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2answers
508 views

10 System LAN latency with ADSL modem as gateway

Recently I expanded LAN in my office from 3 to 10 computers. Structure star topology, one ADSL Modem connected to One Switch which is again connected to 10 computers. Also we have Wifi device ...
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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 ...
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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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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
688 views

Utility to tune network card to reduce latency to its absolute minimum?

I'd like to tune my network card to have the absolute minimum latency when pinging a remote server. Is there a Windows utility that allows me to change things such as MTU, ACK time, buffer length, ...
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1answer
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How does RAM frequency and latency differ? How does it affect performance?

I have a question regarding two specifications of RAM memory, the amount of Mhz and the latency timings (example: 9-9-9-24). Which one of the two is most important for system performance and why? ...
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Does RAM timings with n-n-n-3n value perform better than anything else?

I want to ask something: Does RAM timings with n-n-n-3n (i.e. 8-8-8-24, 9-9-9-27, etc) perform better or is optimized more than the other who doesn't (i.e. 7-8-7-21, 9-9-9-24, etc)?
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1answer
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VLC Caching levels

When I open the Preferences of VLC and go to Input & Codecs, I have a setting called Default Caching Level. I can choose between Cusom Lowest latency Low latency Normal High latency Higher ...
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1answer
915 views

How to ssh in the face of huge (25 second) latency?

I need to create an ssh connection between two Linux machines running Centos v5 but the latency could be as high as 25 seconds. I find that if I test something approaching this configuration ...
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2answers
145 views

Is there a way to use a service to lower your latency?

There is this service wtfast that claims it can lower your ping in some games. Is this true? How it works?
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3answers
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High DPC Latency and Slow Hard Pagefaults on Gigabyte GA-EP35C-DS3R Motherboard

I've owned a DIY-built PC on a Gigabyte GA-EP35C-DS3R motherboard for about 2 years now. When I first built this PC, it ran perfectly under Windows XP 32-bit. Performance was good, and I had no issues ...
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3answers
366 views

What configuration tweaks do I need to do to my Wi-Fi base station to get minimum latency?

I am developing a specialized screen sharing solution. The requirements call for it to: Work over a Wi-Fi LAN network. provide minimum latency and jitter. I did all I know how to do on the ...
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1answer
56 views

low-latency charting?

Need to deliver real-time charts (mostly bar and line charts) and wondering if a fast library can help. I guess that C is mandatory for speed and I would favor frame-buffer drawing (rather than a ...
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0answers
745 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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3answers
239 views

Data coming from the network is only partially transfered on Asus EEE 1001HA, Ubuntu 10.4 Lucid

My wife's netbook started behaving strangely lately. I dug around and found the following symptoms: web browsing: painfully slow (keeps "loading" pages; it might show something like half the Google ...
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1answer
824 views

Firewire audio dropouts Dell Vostro 3500

This question is actually answered, I'm putting it up here since other people might be running into this and it's ultra annoying. Hardware/software involved: RME Fireface 400 firewire audio ...
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1answer
715 views

Is it ok to mix CL4 memory with CL5?

I have 2 x 1GB on 800Mhz CL4 memory in my PC. I'm planning to upgrade to 6GB by adding a pair 2GB modules. Is it ok if I buy CL5 modules or do I have to buy CL4?
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1answer
1k views

Low latency keyboards - are they for real?

Having just seen some commercial or other I just realized there could be such a thing as a high-latency keybard - as compared to a low-latency keyboard. If so then maybe a low-latency one could be yet ...
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3answers
121 views

Why would latency suddenly go up when crossing networks?

I'm looking at the latency from my machine to a world of warcraft server. Every hop while I am in Comcast's network is sub 15ms. Then it hits ATT and goes to 60-70MS for the rest. Why would it ...
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3answers
5k views

Factors affecting network latency

I frequently maintain a constant connection with some private servers. I need to be connected with very little latency. The servers measure response time (*ping) in milliseconds. What factors come ...
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6answers
3k views

(linux) tool to monitor “quality” of tcp connection?

I am looking for a tool to monitor the quality of a TCP connection. I am trying to describe what I mean: It should be a tool with a client and a server part. The client sends, say, 1kB of data per ...
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1answer
2k views

wireless router - configuring for low-latency, high traffic environment

Hey all, I have a few questions about configuring a router to achieve low-latency, high speed throughput on a local area network that is not connected to the internet. I've read up on some stuff, but ...
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5answers
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How To Improve VOIP Sound Quality

PFSense 1.2.2 Cisco IP Phone 7940 (SIP Firmware - G711ulaw) ADSL 6000/768 Asterisk Hi Guys, I'm having trouble maintaining stable outbound VOIP call quality from my home office. Inbound call ...
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2answers
1k views

Memory: trading off CAS latency versus speed

I am trying to upgrade my server's memory for a Dell precision 450 machine. The memory I have now (1GB in two 512 KB sticks) is DDR ECC PC2100 / CAS 2 / 266 MHz (Kingston KVR266x72c2). I want to get ...
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1answer
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Should the use of USB extension cables raise a concern about latency/performance?

Is there any need to be concerned about latency in transmission of any level of data/signal for USB devices when a USB extension cable is being used? For this example lets say it's a 50cm cable (~1.6 ...
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1answer
1k views

ASIO low latency audio problems with wireless networking

I use my laptop to run virtual instruments that I control with a MIDI keyboard. For this reason I need very low latency audio. I use a Roland EDIROL UA-1EX, a pretty basic USB 2.0 audio device which ...
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3answers
2k views

How does TTL affect my internet connection?

Each day I run pings to test latencies, but TTL is different every day, sometimes higher, sometimes lower. How does this affect my connection? Reply from 209.131.36.159: bytes=32 time=106ms TTL=52 ...
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2answers
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High Packet Loss--My Modem Problem, or is it ISP's?

I found that, via PingPlotter, there are a lot of packet loss ( the red line in the figure are packet loss). The ping starts at Hop 1, and reaches the destination after 11 hops. Notice that the ...
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1answer
1k views

DPC latency spikes every 60 seconds related to Dell 1515 (atheros) WLAN

I'm getting DPC latency spikes every 60 seconds related to Dell 1515 (atheros) WLAN. If you turn off the wireless card, the spikes go away. If you disable wireless autodiscovery, they go away. I've ...
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What do the memory timings and RAM mean?

On every piece of RAM you'll see the timings like: "2-2-2-5". What is this all about? What should I buy?