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Questions tagged [latency]

Latency is the time period between a signal being sent and a signal being received

Latency is the time period between a signal being sent and a signal being received. In computer networking this can be the time between a sending of a packet and receiving of a packet.

To illustrate we can use the ping command:

PING google.be (173.194.66.94) 56(84) bytes of data.
64 bytes from google.be (173.194.66.94): icmp_req=1 ttl=47 time=76.6 ms
64 bytes from google.be (173.194.66.94): icmp_req=2 ttl=47 time=74.8 ms
64 bytes from google.be (173.194.66.94): icmp_req=3 ttl=47 time=79.6 ms

The latency here is 76.6 ms.

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what is the latency for an 8K transfer of Fibre Channel? (NFS vs FC)

I've heard it said that a 512byte data transfer over fibre channel is 10us so would an 8k (16x the data) take 160us? or is much of that 10us one time transmit overhead? I'm interested in comparing NFS to FC. Over NFS I'm seeing about 350us for 8K…
Kyle Hailey
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Best region for server to serve US

I want to create a MongoDB Atlas instance and Google Cloud instance to serve the US region. Is there a rule of thumb which region (east, center, south) or city that is the best choice to serve entire US with lowest latency?
william007
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Network time metrics

I am trying to get a sense of the different networking metrics and specifically those that are about time. I find myself lost in definitions though. From the research I have done so far I found some contradictions in the definitions depending on the…
Kyriafinis Vasilis
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Network Latency (mathematical) relation to bandwidth?

Let's say I have a 1Gbps bandwidth NIC. Can I mathematically derive what would my network latency be just from the bandwidth number?
Always_Beginner
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Add latency to domain

I have a question. Is it somehow possible to add latency to a Ubuntu server when it hits a specific domain? For example it should add 50 ms for google.com And add 20ms for Facebook.com
proxiesgroups
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WIndows is not following TcpAckFrequency settings

This is a wierd one. I have set the tcpackfrequency to 2 and windows does not seem to honor it no matter what I do. I would need your help with this. My current template is Internet and congestion provider set to CTCP. But I still see windows…
A V Prajith
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Users unable to connect due to an unknown plausible reason

========================= Warning: Long thread; includes a lot of information to give you some basic understanding of my issues. If you rather not read it, then here are my questions: 1) Does Linux (specifically CentOS 6.5) have any settings that…
Guest46235
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Remote Desktop Software with low latency for thin clients

I'm currently using a thin client with the following specification: I am searching for Remote Desktop software that will allow me to have a very low latency for audio quality on my thin clients. Currently, audio quality is poor. The desktop…
telexper
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Does a 150ms latency is good enough to launch a product (USA hosted in Europe)?

Possible Duplicate: Can you help me with my capacity planning? Having worked for weeks on a new mobile app product, we are finally preparing a public launch in the coming weeks. However we wonder if our Europe based servers will be good enough…
Olivier
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I need to test the ballpark connection latency between two states - Any sites or easy ways to do this?

I am in Kansas I need to test latency to Oregon. Assuming I don't know anyone in Oregeon or know what hosts are pingable and also in oregeon is there any handy tool for this? It would be even better if I could select to arbitrary locations and get…
Joshua Enfield
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Lowering latency to distant endpoint

I need the lowest possible latency from Bulgaria to Korea. From what I understand, as an individual there is not much I can do to choose which physical cable my internet traffic travels on across Eurasia (or through the ocean). This is the realm of…
angularchobo
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Which AWS EC2 region is the best for hosting a global site?

I'm looking for a suggestion to choose a region for a global site(Not targetted for any specific country/region). At the moment I'm looking for a simpler solution without having multiple replicas in different regions. So I'm wondering if anybody…
Bibek Sharma
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multiple domains, one static IP address and latency

how is latency affected when multiple domains are using one single static IP address ? The scenario is in shared web-hosting By latency meaning the DNS lookup the client has to do. As far as I understand it, the browser would hit the root servers…
shirish
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What network performance is required for thin clients?

I am building a network with approx. 1000 thin clients. I intend to run them over VNC. What type of LAN bandwidth and latency are required? What type of hardware will provide that? If, instead of VNC, I were to use RDP,ICA,NX or another…
S Robert James
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