Hp XC System 3.x Software Bedienungsanleitung Seite 96
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Viewing Itanium xperf (Enhanced) Statistics
Figure 1-2 (page 22) shows an xperf display for an Itanium system. By default, xperf displays
graphs with processor-dependent, enhanced statistics. The xperf utility displays graphs with
the following enhanced statistics for Itanium processors.
NOTE: The processor event names listed in this section are used for Itanium Processor 9000
series and may differ slightly from the event names used for other Itanium processor types.
CPU
Displays the following CPU utilization percentages from the /proc/stat file:
• Idle: CPU utilization for idle cycles
• System: CPU utilization for system processes
• User: CPU utilization for user processes
Instructions
Displays the following instructions per cycle (IPC) statistics:
• Raw: IA64_INST_RETIRED + PREDICATE_SQUASHED_RETIRED
• Effective: IA64_INST_RETIRED - NOPS_RETIRED
FPC
Displays the statistic Retired, which is the number of floating point operations retired per cycle
(FP_OPS_RETIRED).
Cycles
Displays the following statistics, per cycle:
• RSE Active: BE_RSE_BUBBLE
• D1TLB: BE_L1D_FPU_BUBBLE.L1D_TLB
• D2TLB: BE_L1D_FPU_BUBBLE.L1D_HPW
• Data Access: (BE_L1D_FPU_BUBBLE.L1D - BE_L1D_FPU_BUBBLE.L1D_HPW -
BE_L1D_FPU_BUBBLE.L1D_TLB) + (BE_EXE_BUBBLE.GRALL -
BE_EXE_BUBBLE.GRGR + BE_EXE_BUBBLE.FRALL)
• Score Board (stalls waiting for resources): BE_L1D_FPU_BUBBLE.FPU +
BE_EXE_BUBBLE.GRGR + BE_EXE_BUBBLE.ARCR_PR_CANCEL_BANK
• BE Flush: BE_FLUSH_BUBBLE.ALL
• Taken Branch: BACK_END_BUBBLE.FE * ((BE_LOST_BW_DUE_TO_FE.ALL -
(BE_LOST_BW_DUE_TO_FE.TLBMISS + BE_LOST_BW_DUE_TO_FE.IMISS)) /
BE_LOST_BW_DUE_TO_FE.ALL)
• Inst Access: BACK_END_BUBBLE.FE * ((BE_LOST_BW_DUE_TO_FE.TLBMISS +
BE_LOST_BW_DUE_TO_FE.IMISS ) / BE_LOST_BW_DUE_TO_FE.ALL)
• Execution: CPU_CYCLES - BACK_END_BUBBLE.ALL
Cache
Displays the following types of cache misses per second calculated from cache miss counts and
the time penalties for accessing different levels of cache memory:
• L1icache misses: Level 1 instruction cache misses
• L1dcache misses: Level 1 data cache misses
• L2cache misses: Level 2 cache misses (single-core only)
• L2icache misses: Level 2 instruction cache misses (dual-core only)
• L2dcache misses: Level 2 data cache misses (dual-core only)
96 Using Xtools
- HP Part Number: 5992-4009 1
- Published: March 2008 1
- Edition: 1 1
- Table of Contents 3
- 4 Table of Contents 4
- Table of Contents 5 5
- 6 Table of Contents 6
- Table of Contents 7 7
- 8 Table of Contents 8
- List of Figures 9
- List of Tables 11
- About This Document 13
- Related Information 14
- Publishing History 14
- HP Encourages Your Comments 15
- 1 Introduction 17
- 18 Introduction 18
- 22 Introduction 22
- 2 Installing HPCPI and Xtools 25
- Installing the Software 26
- Installing the Software 27 27
- Installing the Software 29 29
- Verifying the Installation 30
- Removing the Software 30
- 3 Getting Started with HPCPI 31
- 32 Getting Started with HPCPI 32
- 4 Using HPCPI 35
- Starting the hpcpid Daemon 36
- Selecting Events to Monitor 37
- Commonly Used Event Sets 38
- Event Duty Qualifier 39
- Labeling Data 40
- 42 Using HPCPI 42
- Default Input Data 43
- Flushing Data: hpcpictl flush 43
- HPCPI Header 44
- HPCPI Procedure Header 46
- 48 Using HPCPI 48
- 50 Using HPCPI 50
- HPCPI Utility Options 51
- Specifying Events to Display 52
- Selecting Data by Label 52
- Displaying Raw Values 53
- Limiting the hpcpiprof Output 54
- Additional Options 54
- Using Event Sets 55
- Event Intervals 56
- Multiple Duty Groups 56
- Itanium Instruction Metrics 57
- 5 Using HPCPI Labels 59
- Step 3: Flushing the Data 60
- Label Selectors 62
- -not Operator 63
- -and Operator 63
- -or Operator 63
- -equiv Operator 63
- Operator Syntax 63
- Multiple Labels 64
- Reusing Labels 64
- Comparing Epochs and Labels 64
- Label Examples 65
- Kernel Idle Data: -pid 0 66
- Creating Labels in Programs 67
- Fortran Code Example 68
- Overview 69
- % setenv HPCPIDB ~/hpcpidb 70
- % mkdir -p $HPCPIDB 70
- % hpcpid -create-epoch 70
- Submitting the Job 71
- Collecting Data on One Node 73
- 7 Using Xtools 75
- Xtools Overview 76
- Using xclus and xcxclus 76
- Using xclus and xcxclus 77 77
- Starting xclus and xcxclus 78
- Starting xclus and xcxclus 79 79
- 80 Using Xtools 80
- 82 Using Xtools 82
- 84 Using Xtools 84
- 86 Using Xtools 86
- Recording Data 89
- Replaying Data 89
- Plotting Data 89
- 90 Using Xtools 90
- Viewing Grouped Nodes 92
- Using xperf and xcxperf 94
- Starting xperf and xcxperf 94
- Instructions 96
- Sum I/O B/W 97
- 98 Using Xtools 98
- HTn (HyperTransport Links) 100
- 102 Using Xtools 102
- 106 Using Xtools 106
- 108 Using Xtools 108
- % xclus -generic 109
- % xcxclus -enhanced -apmond 110
- Xtools Daemons 111
- A Product Specifications 113
- 114 Product Specifications 114
- HPCPI Product Limitations 115
- Calls to exec() 116
- Unknown Locations 116
- Mandated Duty Groups 116
- Active Fraction Changes 116
- B HPCPI Quick Reference 117
- Viewing HPCPI Data 118
- C Xtools Quick Reference 119
- Starting xperf or xcxperf 121
- Glossary 123
- 124 Glossary 124
- 126 Index 126
- 128 Index 128
- 130 Index 130
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