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

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Options to increase network lattency [duplicate]

I need to permanently increase network latency in approximately 100ms, without losing packets. Reason: On a certain server and internet game my ping is too much lower than the other people playing ...
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1answer
194 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 ...
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984 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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1answer
473 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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2answers
2k views

Simulating network latency for localhost connection on Windows 7

I need to simulate network latency to a program running on the local computer, connecting to a local service. Thus far I have tried dummynet (a windows build of ipfw) which I got working after some ...
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1answer
171 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 ...
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3answers
5k views

Latency of CPU instructions on x86 and x64 processors

I'm looking for some table or something similar that could help me to calculate efficiency of assembly code. As I know bit shifting takes 1 CPU clock, but I really looking how much takes addition ...
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1answer
1k 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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296 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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1answer
357 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 ...
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211 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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1answer
143 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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540 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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3answers
725 views

Xeon vs overclocked i7 Extreme for lowest latency

I am aware that the differences between high-end i7 and Xeon are: compatibility with dual socket motherboards, total L2/L3 cache size. overclocking capability. extra cores - Haswell ...
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276 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
7k 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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2answers
6k views

Calculating hard disk block model reading time

My professor posted a slide on how to calculate the data retrieval from hard disk using the block model. The specs were: 7200 RPM 5ms SEEK 80MB/s TRANSFER RATE BLOCK MODEL : Block size 4KB I ...
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1answer
422 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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462 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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2answers
3k views

Alternating low and high ping times on ADSL line

I have an ADSL connection at home. Pings times are usually acceptable right after rebooting the modem, between 15 and 60ms to google.com. A few minutes later they go up to 900ms or even higher up to 3 ...
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3answers
3k views

Roommate lagging internet connection by watching videos from Chinese website. Can QoS fix issue?

My roommate is an international student from China and likes to watch Chinese TV shows online using a website based in that region (we're on the U.S. East Coast). But it causes our network's latency ...
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8 views

High latency/ping to local gateway WHILE STREAMING [wireless] [duplicate]

Recently I've become fed up with my wireless internet and want to identify the problem. I don't have a patch cord yet to test a direct connection but so far every computer I've tested has reported ...
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2answers
647 views

High latency/ping to local gateway WHILE STREAMING [wireless]

Recently I've become fed up with my wireless internet and want to identify the problem. I don't have a patch cord yet to test a direct connection but so far every computer I've tested has reported ...
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0answers
514 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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2answers
264 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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0answers
103 views

How to benchmark hard disk? [duplicate]

I am trying to benchmark my hard disk and find the throughput in Mb/s and latency in milliseconds. This is my code: public class OneMB implements Timer { public static void main(String a[]) throws ...
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1answer
761 views

What could cause wired internet latency to increase between wired users?

I have 3 roommates (4 people total). Three users, including me, use wired internet. The fourth uses wireless internet (connected to our network). During the evenings, they complain of high network ...
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1answer
215 views

Expected performance degradation when accessing ORDBMS within VM as opposed to natively?

Is there a significant increase in latency when accessing an ORDBMS (namely Oracle 11g) residing in the guest VM (from the host), as opposed to natively? The development environment will be used ...
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2answers
892 views

Any reason why Chrome would be loading pages much slower than Firefox? [closed]

I switch back and forth using Chrome and Firefox as my browsers. I've noticed lately that Chrome has taken awhile to load some pages even with just one tab open. Firefox doesn't do this, and loads ...
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2answers
403 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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3answers
7k views

Very high latencies with WiFi

We bought a new WiFi router / ADSL modem at home (Asus DSL-N55U-B) and the wifi connection occasionally has very high latencies (up to 20 seconds, versus most common 25 miliseconds when pinging google ...
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1answer
1k views

Increasing value of sched_latency_ns and sched_min_granularity_ns

Why do I get an error message when I try to increase the values of these two parameters: #cat /proc/sys/kernel/sched_latency_ns 1000000000 #echo 2000000000 > /proc/sys/kernel/sched_latency_ns ...
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1answer
1k views

Slow Gmail attachment download over HTTPS

It only affects Gmail. I have tested other HTTP, FTP and HTTPS websites and downloading is fine, at the exact same time the problem is affecting a Gmail attachment download. The symptoms include ...
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0answers
162 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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2answers
79 views

Latency problems at different times of the day [closed]

I'm with Telstra, and basically when it's early in the morning I get 190 ping the average for me, but when it passes 11-12am the ping slowly raises, by 3pm I'm stuck with 300 ping and up, it doesn't ...
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2answers
643 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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1answer
196 views

Microsoft Word 2003 - Debug loading times?

Loading new and most local documents is fast as hell, but a few specific documents can take up to 10 minutes to load, which is not acceptable. I know that these documents have macros enabled and ...
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2answers
408 views

Sustaining Dual Channel among many RAM modules

I'd like to know what are the factors that need to be set in order to sustain the Dual Channel mode. In a mobo with 4 DDR3 slots: Do I have to put pair of chips? Eg: If I put 3 identical chips ...
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1answer
723 views

How can I get Screen Sharing to perform well with heavy updates?

I am using Screen Sharing on the Macintosh OS X Lion to view a remote VNC server display. I have found that when I have a shell in emacs which has tons of text scrolling by, the Screen Sharing ...
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2answers
347 views

How is it possible for SSD's drives to have such a good latency?

First time i read some information about SSD's, i was surprised to learn they internally use NAND flash chips. This kind of memory is generally slow (low bandwidth) and have high latency while SSD's ...
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3answers
3k views

Live Screencast under Linux

I was having some difficulty with running a Live Screencast under Linux. I've found jtvlc and tried using that, but whenever I use it the stream comes out either blank or lagged with extremely high ...
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0answers
129 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
177 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 ...
3
votes
3answers
2k views

Memory, more frequency, or more capacity?

My question my be simple, but I haven't been able to find an answer myself yet. If you had the choice of getting either 24 GB of ram at 1333 MHz, or 12 GB @ 1600 MHz, which would you choose? I know ...
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0answers
186 views

Why do mobile networks have high latencies? [closed]

While Ethernet and WLAN typically have latencies on the order of 1-10ms, mobile networks (GPRS, UMTS etc.) have much higher latencies (200-400 ms for UMTS, even more for GPRS). Why is that? I assume ...
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1answer
438 views

High latency on wireless LAN

I have setup a LAN using AirPort. The nodes areĀ Mac Minis. The OS is OS X Lion 10.7.3. TheĀ AirPort connects to the Internet using cable and the internal connection is wireless. I tried to ping each ...
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111 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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3answers
8k views

What does “Windows is not a real-time operating system” mean?

I came across an application called LatencyMon, that apparently does latency monitoring. I have always understood that the more of a load you put on the processor, the less responsive, or more ...
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2answers
2k views

DSL vs Cable latency

currently I have a 10Mbps DSL line and I'm thinking to switch to a cable since they got 100Mbps for a little less than double the price I'm paying for 10Mbps. In other words the cable company is ...