How to get an effective performance demands it, there are several ways to obtain the following:
1, the client side suggest that this is the best way. Often customers telecommunications, finance, insurance, securities and other carrier-grade systems - especially foreign customers will put forward a clearer performance requirements.
2, based on historical data to analyze, based on their past business situation to analyze customer traffic and the annual monthly, weekly, daily peak traffic. If the customer legacy systems can be analyzed according to the existing system access logs, database records, business reports. Pay special attention to that, different industries, different applications, different characteristics of each of the business is. For example: In the usual load of shopping sites mainly in the evening, but the holiday traffic and transaction volume will usually be several times; and the highest subway ticketing system faces in addition to the weekend, as well as Monday to Friday morning and in the evening after work time.
3, data refer to the history of the project, if the product has other customers, and a similar scale, refer to additional customer needs. Such as online shopping lofty, or a timeout management system, the industry's inventory system.
4, the data refer to other similar projects in the industry, if the enterprise has not done a similar project, you can refer to data released out of the other peer companies - usually companies reporting news or a successful solution will be mentioned, including systems the capacity of the system and the load imposed on the system response capabilities.
5, reference data similar to other industrial applications, and if you can not find other counterparts of data, can also refer to application requirements class. For example do IPTV or DVB test billing system, can refer to the needs of the telecommunications billing system - the most natural project can not be completed Admissions data, but can be understood with other mature industry needs to be tested which should be taken into account What situation.
6, Cao Kan news or other sources of data, a last resort, especially for the front of the house compare interesting industry, involving so-called "achievements" of the industry, you can usually find some available through a variety of media reference data. But it requires patience to find. For example, we test IPTV and DVB systems can be used according to the news published in the habit of users and user developments provinces, municipalities, as well as the major operators of foreign countries to estimate the amount of concurrent system capacity and system brother module in the software development process in much demand management and demand to see that development, CMMI also reflects this, and practical work often requires us to think about how to develop to meet customer needs in accordance with the customer's actual use or need to tune the performance requirements performance demand