User-level applications by way of similar system calls to get data packets from the core buffer. When the NPF is ready, the system calls the trigger "hook" function-read, which is responsible for checking the core buffer NPF: When the buffer is not empty, the buffer contents will be transferred to allocate the specified user program memory. When data is copied to the user layer, the application immediately wake up and start processing the data. In this section, we present detailed measurements of network analysis system results. Purpose of the performance measurement packet capture process. Section 3 of the components mentioned, we will count their exact number of the specific consumption of resources. As a general rule, we take the consumption of CPU clock cycles to count. In fact, this benefit is to be more objective and fair, because this measurement system is absolutely transparent to the specific time and CPU speed.
Windows 7 beta testers on the generally positive comments, particularly the product performance and reliability. Until this week, Microsoft was more obvious criticisms received, respectively, for the UAC function, and resentment, but also Windows 7 launch at least six different versions. The product according to the planning should be listed in January 2010, but Microsoft is believed to have been ready before the end of this years shopping season, the formal launch of Windows 7. Microsoft security alerts for Windows 7 to reduce design changes, actually detonated outside escalating criticism. In Windows Vista, as long as the system will change out a warning. In Windows 7, the user can set the frequency of alerts. Windows Vista One of the most annoying part, is that whenever there is any change in the system will pop up a warning window informs the user. Microsoft Windows 7 to change the design, not only the scope of pre-warning low, the user can decide the frequency of alerts.