19-84 Vol. 3B

PERFORMANCE-MONITORING EVENTS

62H

01H

UNC_DRAM_PAGE_MISS.CH0

Counts the number of precharges (PRE) that were 

issued to DRAM channel 0 because there was a page 

miss. A page miss refers to a situation in which a page 

is currently open and another page from the same 

bank needs to be opened. The new page experiences a 

page miss. Closing of the old page is done by issuing a 

precharge.

62H

02H

UNC_DRAM_PAGE_MISS.CH1

Counts the number of precharges (PRE) that were 

issued to DRAM channel 1 because there was a page 

miss. A page miss refers to a situation in which a page 

is currently open and another page from the same 

bank needs to be opened. The new page experiences a 

page miss. Closing of the old page is done by issuing a 

precharge.

62H

04H

UNC_DRAM_PAGE_MISS.CH2

Counts the number of precharges (PRE) that were 

issued to DRAM channel 2 because there was a page 

miss. A page miss refers to a situation in which a page 

is currently open and another page from the same 

bank needs to be opened. The new page experiences a 

page miss. Closing of the old page is done by issuing a 

precharge.

63H

01H

UNC_DRAM_READ_CAS.CH0

Counts the number of times a read CAS command was 

issued on DRAM channel 0.

63H

02H

UNC_DRAM_READ_CAS.AUTO

PRE_CH0

Counts the number of times a read CAS command was 

issued on DRAM channel 0 where the command issued 

used the auto-precharge (auto page close) mode.

63H

04H

UNC_DRAM_READ_CAS.CH1

Counts the number of times a read CAS command was 

issued on DRAM channel 1.

63H

08H

UNC_DRAM_READ_CAS.AUTO

PRE_CH1

Counts the number of times a read CAS command was 

issued on DRAM channel 1 where the command issued 

used the auto-precharge (auto page close) mode.

63H

10H

UNC_DRAM_READ_CAS.CH2

Counts the number of times a read CAS command was 

issued on DRAM channel 2.

63H

20H

UNC_DRAM_READ_CAS.AUTO

PRE_CH2

Counts the number of times a read CAS command was 

issued on DRAM channel 2 where the command issued 

used the auto-precharge (auto page close) mode.

64H

01H

UNC_DRAM_WRITE_CAS.CH0

Counts the number of times a write CAS command was 

issued on DRAM channel 0.

64H

02H

UNC_DRAM_WRITE_CAS.AUTO

PRE_CH0

Counts the number of times a write CAS command was 

issued on DRAM channel 0 where the command issued 

used the auto-precharge (auto page close) mode.

64H

04H

UNC_DRAM_WRITE_CAS.CH1

Counts the number of times a write CAS command was 

issued on DRAM channel 1.

64H

08H

UNC_DRAM_WRITE_CAS.AUTO

PRE_CH1

Counts the number of times a write CAS command was 

issued on DRAM channel 1 where the command issued 

used the auto-precharge (auto page close) mode.

64H

10H

UNC_DRAM_WRITE_CAS.CH2

Counts the number of times a write CAS command was 

issued on DRAM channel 2.

Table 19-18.  Non-Architectural Performance Events In the Processor Uncore for 

Intel® Core™ i7 Processor and Intel® Xeon® Processor 5500 Series (Contd.)

Event

Num.

Umask

Value

Event Mask Mnemonic

Description

Comment