Intel Xeon E5-2600 Series - Page 52

Intel® Xeon® Processor E5-2600 Product Family Uncore Performance Monitoring
52 Reference Number: 327043-001
DIRECT2CORE_COUNT
• Title: Direct2Core Messages Sent
• Category: DIRECT2CORE Events
• Event Code: 0x11
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Number of Direct2Core messages sent
DIRECT2CORE_CYCLES_DISABLED
• Title: Cycles when Direct2Core was Disabled
• Category: DIRECT2CORE Events
• Event Code: 0x12
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Number of cycles in which Direct2Core was disabled
DIRECT2CORE_TXN_OVERRIDE
• Title: Number of Reads that had Direct2Core Overridden
• Category: DIRECT2CORE Events
• Event Code: 0x13
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Number of Reads where Direct2Core overridden
DIRECTORY_LOOKUP
• Title: Directory Lookups
• Category: DIRECTORY Events
• Event Code: 0x0C
• Max. Inc/Cyc: 1, Register Restrictions: 0-3
• Definition: Counts the number of transactions that looked up the directory. Can be filtered by
requests that had to snoop and those that did not have to.
• NOTE: Only valid for parts that implement the Directory
Table 2-43. Unit Masks for CONFLICT_CYCLES
Extension
umask
[15:8]
Description
NO_CONFLICT bxxxxxxx1 No Conflict:
Counts the number of cycles that we are NOT handling conflicts.
CONFLICT bxxxxxx1x Conflict Detected:
Counts the number of cycles that we are handling conflicts.
Table 2-44. Unit Masks for DIRECTORY_LOOKUP
Extension
umask
[15:8]
Description
SNP bxxxxxxx1 Snoop Needed:
Filters for transactions that had to send one or more snoops because
the directory bit was set.
NO_SNP bxxxxxx1x Snoop Not Needed:
Filters for transactions that did not have to send any snoops because
the directory bit was clear.