como configurar seu zsystem para workloads rebeldes
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Como configurar seu zSystem para workloads rebeldes
Fernando FerreiraIBM Executive I/T SpecialistIBM Academy of Technology / zChampionEmail/Linkedin [email protected] Twiter fernafeibm
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Notes: Performance is in Internal Throughput Rate (ITR) ratio based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput that any user will experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput improvements equivalent to the performance ratios stated here. IBM hardware products are manufactured Sync new parts, or new and serviceable used parts. Regardless, our warranty terms apply.All customer examples cited or described in this presentation are presented as illustrations of the manner in which some customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics will vary depending on individual customer configurations and conditions.This publication was produced in the United States. IBM may not offer the products, services or features discussed in this document in other countries, and the information may be subject to change without notice. Consult your local IBM business contact for information on the product or services available in your area.All statements regarding IBM's future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only.Information about non-IBM products is obtained Sync the manufacturers of those products or their published announcements. IBM has not tested those products and cannot confirm the performance, compatibility, or any other claims related to non-IBM products. Questions on the capabilities of non-IBM products should be addressed to the suppliers of those products.Prices subject to change without notice. Contact your IBM representative or Business Partner for the most current pricing in your geography.
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Tópicos
Introdução
Conceitos
Questoes de Capacidade
Referencias
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Introdução
L1 missL1 miss
Time
zEC12 Out-of-order core execution
Time
Faster millicodeexecution
Instrs1234567
Time
L1 missL1 missz196 Out-of-order core execution
Instrs1234567
BetterInstruction Delivery
Shorter L1Miss latency
Execution
Storage access
Dependency
Execution
Storage access
Dependency
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Conceitos
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Caches
PU
12
PU
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RNI
L1L2LP
L4LPL2RP
L4RP MEMP
How Often?L1MP
L3P
RNIHow Far?
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CPI
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CPUMFNode 1 Node 2
Memory
L4 Cache
L3 Cache
L2
L3 Cache
L1
PU1
L2
L1
PU8
L2
L1
PU1
L2
L1
PU8
L2
L1
PU1
L2
L1
PU8
L3 Cache
PU SCM1 PU SCM2 PU SCM3
Memory
L4 Cache
L3 Cache
L2
L3 Cache
L1
PU1
L2
L1
PU8
L2
L1
PU1
L2
L1
PU8
L2
L1
PU1
L2
L1
PU8
L3 Cache
PU SCM4 PU SCM5 PU SCM6
SC S
CM
1
SC S
CM
2
LPARCPUMF
HIS
LP1 LP2 LP3 LP5LP4 LP6
z/OS
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Questões De
Capacidade
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zSystem Caches
zEC12CPU
5.5 GHz (1514 PCI)Enhanced Out-Of-Order
Caches
L1 private 64k i, 96k dL2 private 1 MB i + 1 MB dL3 shared 48 MB / chipL4 shared 384 MB / book
z13CPU
5.0 GHz (1695 PCI)Major pipeline enhancements
Caches
L1 private 96k i, 128k dL2 private 2 MB i + 2 MB d L3 shared 64 MB / chipL4 shared 480 MB / node - plus 224 MB NIC
...
Memory
L4 Cache
L2
CPU1L1
L3 Cache
L2
CPU6L1... L2
CPU1L1
L3 Cache
L2
CPU6L1...
...
Memory
L4 Cache
L2
PU1L1
L3 Cache
... L2
PU8L1
L2
PU1L1
L3 Cache
...L2
PU8L1
...
Memory
L4 Cache
L2
PU1L1
L3 Cache
... L2
PU8L1
L2
PU1L1
L3 Cache
...L2
PU8L1
Single Book View
Single Drawer View
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LRU Cast-Out
CP Stores Data Fetch Return
PU Chip8 Cores
+ Cache for cores 1 to 8
2MBL2
+ + + + + +
64 MB eDRAMInclusive L3
2MBL2
L1 L1
+ + + + + +
480 MB eDRAM
L4
480 MB eDRAM
L4
2MBL2
+ + + + + +
64 MB eDRAMInclusive L3
2MBL2
L1 L1
+ + + + + +2MBL2
+ + + + + +
64 MB eDRAMInclusive L3
2MBL2
L1 L1
+ + + + + +2MBL2
+ + + + + +
64 MB eDRAMInclusive L3
2MBL2
L1 L1
+ + + + + +2MBL2
+ + + + + +
64 MB eDRAMInclusive L3
2MBL2
L1 L1
+ + + + + +2MBL2
+ + + + + +
64 MB eDRAMInclusive L3
2MBL2
L1 L1
+ + + + + +
PU Chip8 Cores
PU Chip8 Cores
PU Chip8 Cores
PU Chip8 Cores
PU Chip8 Cores
NICL3 owned
Lines
NICL3 owned
Lines
224 MB eDRAM
224 MB eDRAM
X-Bus
S-Bus
Node 1 Node 0
To other drawers
L1 I = 96 KB
L1 D = 128 KB
L2 I = 2 MB
L2 D = 2 MB
z13 CPC Drawer Cache Hierarchy
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Hiperdispatch
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Alocação e Dispatch
SC
SC
Node 1 Node 0
XS S
SC
SC
Node 1 Node 0
X SS
S = S BUS X = X BUS
Drawer 0
Drawer 1
Swap
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Caracterização de workloads
Low Relative Nest Intensity High
Batch Application Type TransactionalLow IO Rate HighSingle Application Mix ManyIntensive CPU Usage LightHigh locality Data Reference Pattern DiverseSimple LPAR Configuration ComplexExtensive Software Configuration Tuning Limited
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Workloads “Intermediarios”
HIGHAVG-HIGH
LOW
AVERAGEAVG-LOW
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In Ready e MPL vs Caches
L1MP CPI
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Efeito 90%
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zIIPs e GCPs
GCP
zIIP
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SMT
PR/SM Hypervisor MT Aware
MT Ignorant
z/OS z/VM
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Ferramentas
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WLM Topology Tool
Requirements: A z10 or newer System z environment with partitions running in Hiperdispatch modeCollecting SMF 99 subtype 14 recordsExcel Version 2013. The spreadsheet should also work on Excel 2007 and 2010
The tool is publicly available at http://www-03.ibm.com/systems/z/os/zos/features/wlm/WLM_Further_Info_Tools.html#Topology
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LPAR design Tool
The tool is publicly available at http://www-03.ibm.com/systems/z/os/zos/features/wlm/WLM_Further_Info_Tools.html#Topology
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SMF 113 Reporting Tool
Requirements: Collecting SMF 113 subtype 2 records on a z10 or newer z system.Excel Version 2013. The spreadsheet should also work on Excel 2007 and 2010
The tool is publicly available at http://www-03.ibm.com/systems/z/os/zos/features/wlm/WLM_Further_Info_Tools.html#Topology
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Referencias II Redbooks:
www.redbooks.ibm.comz Systems Simultaneous Multithreading Revolution – redp5144
IBM z13 Technical Introduction - SG24-8250
IBM z13 Technical Guide - SG24-8251 STG Technical University (Brazil, Las Vegas e Budapeste) :
Kathy Walsh – Performance Hot Topics ( STU )
Frank Kyne - Why is the CPU Time For a Job so Variable? Artigo do Bob Rogers no IBM Systems Magazine sobre SMT
http://www.ibmsystemsmag.com/mainframe/trends/IBMResearch/smt_mainframe