![]() ![]() The servers can sustain throughput around 10 Gbps, as an example, here is a wget from another host in Tele2's network: 100% 100.00G 1. Speed test global servers simultaneously. CloudFlare CDN: This speed test is hosted on the CloudFlare CDN. If your connection is fast enough to completely download the large file, the download restarts (seen in the graph by a vertical red line). To stop the test early, close the web page. To restart the test, refresh the web page. Like classic linear (single thread), multithread results show speed from start to finish taking everything into account. The test runs for 20 seconds, and then automatically stops. If a server should fail, users would be served by the second closest server. Some connections perform best when loading multiple files, the multithread speed test can max the potential of these connections and provide a single result spanning multiple routes. In addition to simply serving users using the closest server, anycast also enables basic load balancing and redundancy as users in different areas are served by their closest server, spreading the load over all of our installations. Our primary network metric is latency and therefore the closest network distance is typically the closest node geographically but there are situations where ineffecient fiber routing or cuts could lead to you being served by a node further away. Do note how "closest" is not measured geographically but rather by what our networks thinks is the closest location. Tele2 speedtest service utilizes this to send you to the closest location in our network. This speed test will download randomly generated data to your browser, calculate your download speed and log your speed test results. Sparse files, such as the ones provided here via HTTP and FTP, can be created with something along the lines of: dd if=/dev/zero of=my_large_file bs=1 count=0 seek=10GĪnycasting is a technique where a single IP address is used in multiple locations in a network and packets are sent to the closest server. You can also download the free Speedtest mobile app by Ookla for Android and iOS to test your connection on your mobile device. TCP windows have been slightly tweaked to support higher throughput. A small script called cleandir is used to clean the upload directory of the FTP server to avoid filling the file system with temporary uploaded files. But, the primary reason to download test files is that they evaluate download speeds on various internet connections. Debian Linux is the operating system used, nginx for serving web pages and sparse files via HTTP and vsftpd is used for FTP. Each location consists of a 1U Supermicro server with an octacore Xeon E3-1240 V2 running at 3.4GHz, 32GB of RAM and an Intel 10GE NIC (82579LM chip). This page and the listed speedtest services are hosted on a number of servers spread through Europe (see locations).
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