To perform a data transfer rate test, please contact our Data Team directly through email with the subject line: Test Dataset.
When a new Globus Shared Endpoint is created for your project, a large file named 'testdata' containing random data will be placed in it. You should download that file to test transfer rates to your institution.
If you want to test with known high-performance servers, or compare the speed of distant vs. local transfers, The Energy Sciences Network (ESNet) maintains a set of machines for such testing. They use the GridFTP protocol (which Globus uses) for maximum performance. See https://fasterdata.es.net/performance-testing/DTNs.