Performance Blog

Posts Tagged ‘usl

I just posted an article on how to performance load testing in production on the Box Tech blog – check it out.

The focus of that article is applying load to ensure that the system is stable and performs reasonably. This should be distinguished from Scalability Testing where the goal is to measure the scalability of the application for performance analysis as well as capacity planning.

To test scalability, it is important to increase the load methodically so that performance can be measured and plotted. For example, we can start with running 100 emulated users, then increment in terms of 100 until we reach 1000 users. This will give us 10 data points which is sufficient to give a good estimate of scalability. To compute a scalability metric, take a look at Gunther’s USL (Universal Scalability Law).


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