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Using Performance Monitoring Events B
B-51
The performance metrics listed in Table B-1 fall into three categories:
• Logical processor specific and supporting parallel counting.
• Logical processor specific but constrained by ESCR limitations.
• Logical processor independent and not supporting parallel counting.
Table B-5 lists performance metrics in the first and second category.
Table B-6 lists performance metrics in the third category.
There are four specific performance metrics related to the trace cache
that are exceptions to the three categories above. They are:
• Logical Processor 0 Deliver Mode
• Logical Processor 1 Deliver Mode
• Logical Processor 0 Build Mode
• Logical Processor 0 Build Mode
Each of these four metrics cannot be qualified by programming bit 0 to
4 in the respective ESCR. However, it is possible and useful to collect
two of these four metrics simultaneously.
Table B-6 Metrics That Support Qualification by Logical Processor and
Parallel Counting
General Metrics Uops Retired
Instructions Retired
Instructions Completed
Speculative Instructions Completed
Non-Halted Clockticks
Speculative Uops Retired
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