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Log
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Logical partitioning of processors
The method of logically splitting the physical processor is referred to as the scheduling
mode. This mode allows you to specify dedicated or shared. They are called the dedicated
mode and shared mode. Different features of each mode are shown in the table below.
Processor scheduling mode
Mode
Explanation
Dedicated
mode
The logical processor on a LPAR exclusively uses the corresponding
physical processor.
For each LPAR, it is possible to specify the number of logical
processors assigned. (However, it is not possible to specify more than
the number of physical processors available.)
It is also possible to specify the physical processor number that a logical
processor uses.
If the physical processor number is not specified, LPAR manager
determines to assign the number to be used when the LPAR is
activated.
Since there is no overhead for switching the physical processors
between the logical processors, the LPAR performs faster.
Shared mode Physical processors are time-shared among the logical processors
defined in the LPAR for which the shared mode is specified.
The number of logical processors to be used in the shared mode can be
set for each LPAR. (It is possible to specify more than the number of
physical processors available, but operations might slow down to an
extreme level.).
The utilization rate of the physical processors can be set dynamically for
each LPAR, allowing flexible use of physical processor resources.
The scheduling mode for processors is set per LPAR, so it is not possible to specify a
different scheduling mode for each individual logical processor within a single LPAR.
Dedicated mode (example)
4
2
0
1
5
0
1
2
LPAR1: 3 Ways
0
LPAR2: 2 Ways
LPAR3: 1 Way
Dedicated
0
1
Logical processor
(Processor number)
8 Ways
Physical processor
(Processor number)
6
7
3
Dedicated Dedicated Dedicated Dedicated
Summary of Contents for Compute Blade 2000
Page 1: ...MK 99BDS2K001 16 Hitachi Compute Blade 2000 User s Guide ...
Page 42: ...xlii Precautions for Safe Use Rear View of A1 A2 Chassis ...
Page 43: ...xliii Precautions for Safe Use Rear View of A2 Chassis ...
Page 44: ...xliv Precautions for Safe Use Server Blade ...
Page 45: ...xlv Precautions for Safe Use I O Slot Expansion Unit ...
Page 46: ...xlvi Precautions for Safe Use I O Module ...
Page 47: ...xlvii Precautions for Safe Use AC Power Input Module ...
Page 51: ...li How to Use the Manuals This page is intentionally left blank ...
Page 61: ...10 1 Before Use ...
Page 64: ...13 2 How to Use the System Equipment Rear view of A1 chassis Rear view of A2 chassis ...
Page 93: ...42 2 How to Use the System Equipment ...
Page 123: ...72 3 Connecting the System Equipment and Powering On ...
Page 272: ...221 5 Server Blade Setup 3 Check Del and click Go The following screen appears 4 Click Yes ...
Page 345: ...294 5 Server Blade Setup 12 Click Next The following screen appears ...
Page 351: ...300 5 Server Blade Setup 3 Check Delete and click Go The following screen appears 4 Click Yes ...
Page 426: ...375 5 Server Blade Setup 3 Check Delete and click Go The following screen appears 4 Click Yes ...
Page 430: ...379 5 Server Blade Setup 3 Click Go Hotspare is set to the specified hard disk ...
Page 479: ...428 5 Server Blade Setup ...
Page 717: ...666 6 Management Module Settings Details of a physical partition ...
Page 722: ...671 6 Management Module Settings Server blade details view ...
Page 723: ...672 6 Management Module Settings ...
Page 732: ...681 6 Management Module Settings Management module details view ...
Page 745: ...694 6 Management Module Settings Optional Physical WWN list view ...
Page 748: ...697 6 Management Module Settings Optional Physical WWN initialization view ...
Page 751: ...700 6 Management Module Settings ...
Page 754: ...703 6 Management Module Settings Power status details view ...
Page 767: ...716 6 Management Module Settings ...
Page 768: ...717 6 Management Module Settings ...
Page 769: ...718 6 Management Module Settings ...
Page 814: ...763 6 Management Module Settings Power status trend view partition ...
Page 817: ...766 6 Management Module Settings Access log display view ...
Page 819: ...768 6 Management Module Settings WWN change log display view ...
Page 879: ...828 7 Configuring the LAN Switch Module Link aggregation adding editing screen ...
Page 899: ...848 8 Configuring the 10 Gb DCB Switch Module ...
Page 919: ...868 10 Configuring the Fibre Channel Switch Module ...
Page 1535: ...1484 12 Logical partitioning manager ...
Page 1877: ...1826 14 14 When You Need Help ...
Page 1925: ...16 Glossary ...