19-110 Vol. 3B
PERFORMANCE-MONITORING EVENTS
31H
02H
UNC_QMC_PRIORITY_UPDATE
S.CH1
Counts number of DRAM channel 1 priority updates. A
priority update occurs when an ISOC high or critical
request is received by the QHL and there is a matching
request with normal priority that has already been
issued to the QMC. In this instance, the QHL will send a
priority update to QMC to expedite the request.
31H
04H
UNC_QMC_PRIORITY_UPDATE
S.CH2
Counts number of DRAM channel 2 priority updates. A
priority update occurs when an ISOC high or critical
request is received by the QHL and there is a matching
request with normal priority that has already been
issued to the QMC. In this instance, the QHL will send a
priority update to QMC to expedite the request.
31H
07H
UNC_QMC_PRIORITY_UPDATE
S.ANY
Counts number of DRAM priority updates. A priority
update occurs when an ISOC high or critical request is
received by the QHL and there is a matching request
with normal priority that has already been issued to
the QMC. In this instance, the QHL will send a priority
update to QMC to expedite the request.
32H
01H
UNC_IMC_RETRY.CH0
Counts number of IMC DRAM channel 0 retries. DRAM
retry only occurs when configured in RAS mode.
32H
02H
UNC_IMC_RETRY.CH1
Counts number of IMC DRAM channel 1 retries. DRAM
retry only occurs when configured in RAS mode.
32H
04H
UNC_IMC_RETRY.CH2
Counts number of IMC DRAM channel 2 retries. DRAM
retry only occurs when configured in RAS mode.
32H
07H
UNC_IMC_RETRY.ANY
Counts number of IMC DRAM retries from any channel.
DRAM retry only occurs when configured in RAS mode.
33H
01H
UNC_QHL_FRC_ACK_CNFLTS.I
OH
Counts number of Force Acknowledge Conflict
messages sent by the Quickpath Home Logic to the
IOH.
33H
02H
UNC_QHL_FRC_ACK_CNFLTS.R
EMOTE
Counts number of Force Acknowledge Conflict
messages sent by the Quickpath Home Logic to the
remote home.
33H
04H
UNC_QHL_FRC_ACK_CNFLTS.L
OCAL
Counts number of Force Acknowledge Conflict
messages sent by the Quickpath Home Logic to the
local home.
33H
07H
UNC_QHL_FRC_ACK_CNFLTS.A
NY
Counts number of Force Acknowledge Conflict
messages sent by the Quickpath Home Logic.
34H
01H
UNC_QHL_SLEEPS.IOH_ORDER Counts number of occurrences a request was put to
sleep due to IOH ordering (write after read) conflicts.
While in the sleep state, the request is not eligible to
be scheduled to the QMC.
34H
02H
UNC_QHL_SLEEPS.REMOTE_O
RDER
Counts number of occurrences a request was put to
sleep due to remote socket ordering (write after read)
conflicts. While in the sleep state, the request is not
eligible to be scheduled to the QMC.
34H
04H
UNC_QHL_SLEEPS.LOCAL_ORD
ER
Counts number of occurrences a request was put to
sleep due to local socket ordering (write after read)
conflicts. While in the sleep state, the request is not
eligible to be scheduled to the QMC.
Table 19-20. Non-Architectural Performance Events In the Processor Uncore for
Processors Based on Intel® Microarchitecture Code Name Westmere (Contd.)
Event
Num.
Umask
Value
Event Mask Mnemonic
Description
Comment