Uncore Manual

Reference Number: 329468-002 85
Uncore Performance Monitoring
Memory Controller (iMC) Performance Monitoring
DCLOCKTICKS
• Title: DRAM Clockticks
• Category: DCLK Events
• Event Code: 0x00
• Max. Inc/Cyc:. 1, Register Restrictions: 0-3
• Definition:
DRAM_PRE_ALL
• Title: DRAM Precharge All Commands
• Category: DRAM_PRE_ALL Events
• Event Code: 0x06
• Max. Inc/Cyc:. 1, Register Restrictions: 0-3
• Definition: Counts the number of times that the precharge all command was sent.
DRAM_REFRESH
• Title: Number of DRAM Refreshes Issued
• Category: DRAM_REFRESH Events
• Event Code: 0x05
• Max. Inc/Cyc:. 1, Register Restrictions: 0-3
• Definition: Counts the number of refreshes issued.
Table 2-79. Unit Masks for CAS_COUNT
Extension
umask
[15:8]
Description
RD_REG bxxxxxxx1 All DRAM RD_CAS (w/ and w/out auto-pre)
Counts the total number or DRAM Read CAS commands issued
on this channel. This includes both regular RD CAS commands as
well as those with implicit Precharge. AutoPre is only used in
systems that are using closed page policy. We do not filter based
on major mode, as RD_CAS is not issued during WMM (with the
exception of underfills).
RD_UNDERFILL bxxxxxx1x Underfill Read Issued
Counts the number of underfill reads that are issued by the
memory controller. This will generally be about the same as the
number of partial writes, but may be slightly less because of
partials hitting in the WPQ. While it is possible for underfills to be
issued in both WMM and RMM, this event counts both.
RD b00000011 All DRAM Reads (RD_CAS + Underfills)
Counts the total number of DRAM Read CAS commands issued
on this channel (including underfills).
WR_WMM bxxxxx1xx DRAM WR_CAS (w/ and w/out auto-pre) in Write Major Mode
Counts the total number or DRAM Write CAS commands issued
on this channel while in Write-Major-Mode.
WR_RMM bxxxx1xxx DRAM WR_CAS (w/ and w/out auto-pre) in Read Major Mode
Counts the total number of Opportunistic DRAM Write CAS
commands issued on this channel while in Read-Major-Mode.
WR b00001100 All DRAM WR_CAS (both Modes)
Counts the total number of DRAM Write CAS commands issued
on this channel.
ALL b00001111 All DRAM WR_CAS (w/ and w/out auto-pre)
Counts the total number of DRAM CAS commands issued on this
channel.
RD_WMM bxxx1xxxx Read CAS issued in WMM
RD_RMM bxx1xxxxx Read CAS issued in RMM