# http_load > An HTTP benchmarking tool. > Runs multiple HTTP fetches in parallel to test the throughput of a web server. > More information: . - Emulate 20 requests based on a given URL list file per second for 60 seconds: `http_load -rate {{20}} -seconds {{60}} {{path/to/urls.txt}}` - Emulate 5 concurrent requests based on a given URL list file for 60 seconds: `http_load -parallel {{5}} -seconds {{60}} {{path/to/urls.txt}}` - Emulate 1000 requests at 20 requests per second, based on a given URL list file: `http_load -rate {{20}} -fetches {{1000}} {{path/to/urls.txt}}` - Emulate 1000 requests at 5 concurrent requests at a time, based on a given URL list file: `http_load -parallel {{5}} -fetches {{1000}} {{path/to/urls.txt}}`