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Developer’s Manual March, 2003 12-11
Intel
®
80200 Processor based on Intel
®
XScale
™
Microarchitecture
Performance Monitoring
12.6 Multiple Performance Monitoring Run Statistics
Even though only two events can be monitored at any given time, multiple performance monitoring
runs can be done, capturing different events from different modes. For example, the first run could
monitor the number of writeback operations (PMN1 of mode, Stall/Writeback) and the second run
could monitor the total number of data cache accesses (PMN0 of mode, Data Cache Efficiency).
From the results, a percentage of writeback operations to the total number of data accesses can be
derived.