AMD 4.4.5 user manual Log Fastpath Memory Requests when Logging, 145

	AMD Confidential
User Manual	November 21st, 2008

This item, checked by default, disables the Fastpath Memory mechanism when Memory Space Accesses logging is enabled. If this is unchecked, accesses may not appear in the log.

WARNING: Un-checking this item may lead to significantly compromised performance of SimNow if large numbers of accesses are being made to the device in question. For example, logging all accesses to the DIMM device would make SimNow extremely slow.

Log Fastpath Memory Requests when Logging

This item, when combined with un-checking Disable Fastpath Memory when Logging, will log both memory space accesses and Fastpath Memory requests themselves.

What is then logged are slow-path Memory Space Accesses and Fastpath Memory handle requests. Actual calls to Fastpath Memory, i.e. usage of Fastpath Memory handles, are not logged.

Chapter 9: Logging 145