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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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Network latency -- how long does it take for a packet to travel halfway around the world?

Possible Duplicates: How does geography affect network latency? How much network latency is “typical” for east - west coast USA? If I'm hosting an app in NY, what kind of delay can I expect for a user to get a single packet if they're in…
kaneuniversal
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Diagnosing network latency issues

I have two servers both with gigabit network cards that were experiencing severe latency issues communicating with one another. The culprit eventually turned out to be that one of the servers was patched into a 100mb switch port. pinging the…
oooo ooo
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Is latency the time it takes to get the first byte?

If I request an image from a server, would latency be the time it takes to receive the first byte of the image?
Latency
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How remote warfare works when even my satellite TV and remote server has latency?

This question is after reading this article. My title asks it all. How the connection for this remote warfare works with a absolutely low network latency (which i believe is essential to achieve a remotely possible war experience) even after it…
blntechie
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How can I troubleshoot excessive latency between client and server?

On a large private network there seems to be excessive latency between two boxes which I control. This is stopping the server providing a web service to the client as its causing timeouts. Here's a slow running request logged in Charles Timing …
Saul
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How to investigate initial server response latency (2.9s) of wordpress/nginx site?

I infer it takes roughly 3 seconds to build HTML and send it back. Is there something obvious that I am missing? Hardware: 2 CPU, 4 GB RAM, 100 gb HDD Stack: Fresh CentOS, Nginx, Wordpress DD perf averages 200-300 MB/s EDIT: Getting "Unable to…
Thale
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Is it bad for latency to have ping running 24/7?

I want to display my avg latency time for whatever connection I currently have to the internet in a widget. Would having ping run continuously make my connection suffer?
Elijah Lynn
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Find hoster with low latency to a specific webservice

We want to have a server with low latency to the service opensea.io. To find out which hoster is close to their servers we would simply rent a bunch of servers from different hosters and ping the service above. Do you have any better ideas for this…
user1000415
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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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