Windows Counters are system performance counters that can be collected at regular intervals during profiling. In the Marks ...

Windows Counters are system performance counters that can be collected at regular intervals during profiling. In the Marks view, there is a row labeled "AutoMark" for each collection interval. The row contains columns that describe the performance counter values at that interval. To restrict the analysis to a period of time between two particular marks, select the marks, right-click, and then choose "Add Filter on Marks".