EÆciency and Accuracy Issues for Sampling vs. Counting Modes of Performance Monitoring Hardware

A Comparison of Counting and Sampling Modes of Using Performance Monitoring Hardware

Performance monitoring hardware is available on most modern microprocessors in the form of hardware counters and other registers that record data about processor events. This hardware may be used in counting mode, in which aggregate events counts are accumulated, and/or in sampling mode, in which time-based or event-based sampling is used to collect profiling data. This paper discusses uses of ...

Accuracy of Performance Monitoring Hardware

Performance monitoring hardware is available on most modern microprocessors in the form of hardware counters and other registers that record data about processor events. This hardware may be used in counting mode, in which aggregate event counts are accumulated, and/or in sampling mode, in which time-based or event-based sampling is used to collect profiling data. This paper discusses uses of t...

A Comparison of Counting and Sampling Modes of Using Performan e Monitoring Hardware

The Intel Pentium 4’s Unique Performance-monitoring Features Overcome Many Limitations and Problems Found in Previous Processors. Pentium 4 Xeon Performance Monitoring Supports Simultaneous Multithreaded Execution

Most modern, high-performance processors have special, on-chip hardware that can monitor performance. The features of this monitoring hardware typically include event detectors and counters, qualification of event detection and counting by privilege mode and event characteristics, and support for event-based sampling. However, these features often suffer from a common set of problems including ...

Photon dosimetry based on selective data sampling for the NaI(TL) detector

Radiation detection is essential for determining of radiation dose. Depend on the detector and dosimetry method, detection process is performed in different levels. Pulse counting is the first level of detection. Typically, the output of a radiation detector for determining value of the radiation dose cannot be used directly. Through changing the response function or the readout detector, is tr...