If a router has a single large 2MB transmit buffer for example and it allows a single user (or connection, or flow) to fill that 2MB up, while communicating with a server that is only accepting data at 20mbps, it has prevented everyone else on the network from transmitting data (including pings). On modern connections, it’s often due to bad queuing discipline.Ī simple example is large buffers. The reason why latency goes up is not usually because the interface is overwhelmed. A good QoS will make smart choices about what to drop if ever the need arises so that latency does not go up by much under load. Individuals looking for a map of coverage that highlights which mobile providers have what level of service in the areas that matter most to them can now open their app and check out the tab marked “ Maps.” Speaking of which, people using Ookla’s Speedtest app on Apple devices now have access to their Maps feature, which previously was only available on Android. But at present it’s only mentioned as existing on their Android and iOS apps, which isn’t much help if you’re testing via a web browser on a laptop or desktop computer. Nevertheless, we always advocate for consumers to be able to see more data on such testing services, thus Ookla’s change is a welcome one. The results and any associated usefulness are thus somewhat subjective, while people on slower connections will probably just find that their existing annoyances with slow speeds are merely reinforced. The catch here is that Ookla’s speedtest service will always be trying to push as much data down your pipe as possible during the test, which won’t necessarily always reflect how things work in the real-world. Latency is also measured while the upload test is in progress to see how it is affected by upload activity on your network, like someone on your home network uploading a year’s worth of photos. Latency is measured while the download test is in progress to see how it is affected by download activity on your network, like a household member downloading a large game while you’re trying to work. This test at the beginning of your Speedtest measures the response of a request on your network as if it is not in use. The loaded latency test measures ping during three stages, which we’ve summarised below. Ookla previously only provided a single result for latency, but their new test has been designed to measure “ loaded latency“, giving a more nuanced picture of responsiveness and what the bottlenecks in your connection really are. ![]() ![]() 1000ms = 1 second) and modern broadband connections will often have an average latency of anything from around c.5ms to 40ms (what is normal for your connection will depend on lots of different factors – see below)Ī faster score (shortest time) is always best for latency, although the times can be affected by various things, such as the performance of remote internet servers, the connection technology being used, network congestion at your ISP, peering / routing problems and the setup of your own home network etc. The delay is measured in milliseconds (e.g. ![]() Latency is a measure of the time that it takes for a packet of data to travel from your computer to a remote server and then back again (ping). Ookla, which runs the popular service for broadband and mobile connections, has announced that they’ve redesigned how they measure latency to give users better access to this metric and to provide more information so that you can better “ understand where the bottlenecks in your network’s responsiveness” are.
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