Suddenly, the speed drops to 40 MB/s. Because this is a 10GB file and not a tiny packet, you’ve hit a sustained limit Is it the Server? Some servers, like those at , use 10Gbps NICs to ensure they aren't the bottleneck. Is it your Hardware? Your router or SSD might be overheating, or your SSD cache might be full
| Source / Provider | 10GB Test File URL (Direct Link) | | :--- | :--- | | | http://speedtest.us-east-1.linodeobjects.com/10GB_test.file | | Linode (AP-South) | http://speedtest.ap-south-1.linodeobjects.com/10GB_test.file | | Linode (EU-Central) | http://eu-central-1.linodeobjects.com/speedtest/10GB-speedtest | | Hetzner | http://speed.hetzner.de/10GB.bin | | XS4ALL | http://download.xs4all.nl/test/10GB.bin | Download Speed Test File 10gb
fallocate -l 10G /var/www/html/testfile10G.bin # or dd if=/dev/urandom of=/var/www/html/testfile10G.bin bs=1M count=10240 Suddenly, the speed drops to 40 MB/s
You should always use trusted sources to ensure the server on the other end can actually saturate your connection. Below are reliable repositories for large dummy files: ThinkBroadband (UK) Is it your Hardware
The download should take approximately 2.5 to 3 minutes.
Some ISPs limit speeds during peak hours or after significant usage.
: Offers 1GB, 5GB, and 10GB files primarily for UK users, though they are accessible globally for manual testing.