Intel BX80571E7500 - Core 2 Duo 2.93 GHz Processor Programming Manual page 75

I ® X ® P 7500 S
NTEL EON ROCESSOR
RBOX_SNP_BYPASS
• Title: R-Box SNP Bypass
• Category: System Bound Enhancement
• Event Code: 0x51, Max. Inc/Cyc: 1,
• Definition: R-Box SNP bypass optimization utilized. When both snoop and big snoop bypass are
selected, the performance counter will increment on both subevents.
Extension
---
SNP
BIG_SNP
ALL
REQ_TBL_OCCUPANCY
• Title: Request Table Occupancy
• Category: Ring Bound Queue
• Event Code: 0x31, Max. Inc/Cyc: 48,
• Definition: Number of request table entries occupied by socket requests. Local means request is
targeted towards the B-Boxes in the same socket. Requests to the B-Box in the same socket are
considered remote.
• NOTE: Occupancy is tracked from allocation to deallocation of each entry in the queue.
Extension
---
LOCAL
REMOTE
ALL
S2B_HOM_BYPASS
• Title: S-Box to B-Box HOM Bypass
• Category: System Bound Enhancement
• Event Code: 0x52, Max. Inc/Cyc: 1,
• Definition: Number of cycles the S-Box to B-Box HOM channel bypass optimization was utilized.
Includes cycles used to transmit message flits and credit carrying idle credit flits.
TO_RING_B2S_MSGQ_CYCLES_FULL
• Title: Ring Bound B2S Message Queue Full
• Category: Ring Bound Queue
• Event Code: 0x2B, Max. Inc/Cyc: 1,
• Definition: Number of cycles in which the header buffer, containing B to S-Box messages on their
way to the Ring, is full.
TO_RING_B2S_MSGQ_CYCLES_NE
• Title: Cycles Ring Bound B2S Message Queue Not Empty
• Category: Ring Bound Queue
• Event Code: 0x2D, Max. Inc/Cyc: 1,
• Definition: Number of cycles in which the header buffer, containing B to S-Box messages on their
way to the Ring, has one or more entries allocated.
U P G
ERIES NCORE ROGRAMMING UIDE
umask
[15:8]
b00 (*nothing will be counted*)
b01 Snoop
b10 Big Snoop
b11 Both Bypasses
umask
[15:8]
b00 (*nothing will be counted*)
b01 Local
b10 Remote
b11 Local And Remote
UNCORE PERFORMANCE MONITORING
Description
Description
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