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

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33
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7answers
69k views

Why is the response on localhost so slow?

I am working on a tiny little PHP project for a friend of mine, and I have a WAMP environment setup for local development. I remember the days when the response from my local Apache 2.2 was immediate. ...
7
votes
3answers
1k views

Does routing distance affect performance significantly?

When I say routing distance, I mean on a global scale. For instance, if my target audience is in China, do I look for a host within China?
10
votes
6answers
14k views

How does geography affect network latency?

I have the option of hosting our database/web server at a managed hosting company on the East Coast (US) or one on the West Coast (US). Our company is based out of New York City, and both hosting ...
2
votes
2answers
794 views

Configuring Squid to choose a peer cache based on latency to destination website?

Is there any way to configure Squid to choose a peer cache based on the latency in communication to the http port on the destination webserver? For example, let's say we have two Squid caches - ...
1
vote
4answers
392 views

Bandwidth throttling software

I need to be able to simulate high bandwidth/high latency/high packet loss on my pc for the purpose of testing the software that I'm writing. I've seen some software that you can install on a ...
0
votes
2answers
250 views

How can I determine the fastest memory based on latency and bandwidth?

I've got some older hardware that needs a memory upgrade, and I was trying to determine what RAM would be the fastest on the platform. My platform takes DDR2 667MHz which is (slightly) more ...
4
votes
3answers
198 views

run local MySQL instance for fast mysql_real_escape_string calls

Currently all MySQL data/API calls are handled by a remote DB cluster (i.e. network latency is a factor in total script execution time). To reduce execution time in this context, would it be sensible ...
1
vote
4answers
739 views

What latency can I expect with SDSL?

My company is considering moving some internal infrastructure to my location, that will be accessed, over vpn, from other company locations. Currently we are reluctant to do this because of the ...
2
votes
9answers
2k views

Measure data transfer throughput?

How can I benchmark the network transfer speed of my servers? We already have an existing file server, but it is fairly old. We recently got a donation of a (relatively) newer P4 box, and I wanted to ...
0
votes
1answer
335 views

SONET ADM Latency

Is there published documentation on best-case and worst-case latency added by SONET ADM equipment? Specifically I'm looking for the latency I could expect to be added to an OC-3 piped through these ...
1
vote
4answers
3k views

Level 3 Communications Monitoring

Does Level 3 Communications offer any type of map of current network status? It seems our connection here is getting high latency through their network. Also what is the experience asking them ...
2
votes
11answers
3k views

VPN drops (DPC latency issue)

I am using VPN to connect to work. I am used to listening to streaming music when I am in the office, but when i do that over the VPN, the connect drops. So, no big deal, I just won't use the ...
1
vote
2answers
1k views

How much latency does raid 5 add to transfers?

Your bandwidth/throughput should go up with raid 5, but you will take a bit of hit in latency after you over run the cache, since you need to calculate the parity. Has anybody done a latency test ...
4
votes
8answers
6k views

How can I control the network latency?

My company is developing a network software and its network stability is very important. So my supervisor want me to set up the testing environment for our QA team. I can take care of almost ...
7
votes
5answers
11k views

Tuning NFS for minimum latency

How can I achieve low latency for NFS exports in order to e.g. have developers work nicely in Eclipse/Visual Studio with their workspaces mounted over NFS?
5
votes
8answers
4k views

Latency in Internet connections from Europe to USA

I'm looking for a (cheap) Web hoster. Basically all the hosting providers that I can find, and match my requirements are located in the USA. But my target audience is in (Western-)Europe, I know for ...