AMD 3200 Revision History - Page 34
Latency, Performance, Counters, Accurate
UPC - 730143241144
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Revision Guide for AMD Family 15h Models 00h-0Fh Processors 48063 Rev. 3.18 October 2012 550 Latency Performance Counters Are Not Accurate Description Latency performance counters NBPMCx1E2 through NBPMCx1E7 are not accurate when L3 speculative miss prefetching is enabled (D18F2x1B0[13] = 0b, Extended Memory Controller Configuration Low[SpecPrefDis]). Potential Effect on System Performance monitoring software cannot accurately measure latency events. The reported latency may greatly exceed the actual latency in some instances. Suggested Workaround No workaround is recommended. Performance monitoring software may set D18F2x1B0[13] = 1b to collect accurate latency values. This workaround has an impact to overall system performance. Fix Planned No fix planned 34 Product Errata