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Memory space for a guest OS
Memory space available for a guest OS is calculated by subtracting the amount of
memory the logical firmware uses from the amount assigned to the LPAR. This
value is usually the same as the memory space displayed for the guest OS.
However, all assigned memory space may not be available depending on the guest
OS specifications or environment.
When the amount of memory for a guest OS is not enough
against the amount applications use, memory swap might
cause performance degradation. When assigning an amount
of memory, make sure to take the memory amount for
firmware as well as that used by the OS and applications into
account.
NUMA (Non-Uniform Memory Access)
It is necessary to assign the processor and memory to the
LPARs while understanding the NUMA feature well when
using the NUMA setting.
LPAR manager recommends using the non-NUMA on all
server blades.
It is unnecessary to set NUMA when the NUMA features are
not required.
Outline
The server blade of the NUMA configuration has two or more nodes which consists of a
socket (group of processors) and memory connected to it. Nodes are connected by the
interconnection.
The memory in the same node for a processor is called local memory, and the memory
in the other node is called remote memory.
The processor and the local memory are connected directly and close. But the distance
to remote memory connected by an interconnection is physically further away
compared with local memory.
Each processor can use the memory in all nodes, but the access costs (a delay time) to
the memory are influenced by the physical distance.
The memory access cost to the local memory is smaller than the remote memory,
because the distance to the local memory is shorter than the remote memory. This
means that the local memory access performance is higher than the remote one.
Содержание Compute Blade 2000
Страница 1: ...MK 99BDS2K001 16 Hitachi Compute Blade 2000 User s Guide ...
Страница 42: ...xlii Precautions for Safe Use Rear View of A1 A2 Chassis ...
Страница 43: ...xliii Precautions for Safe Use Rear View of A2 Chassis ...
Страница 44: ...xliv Precautions for Safe Use Server Blade ...
Страница 45: ...xlv Precautions for Safe Use I O Slot Expansion Unit ...
Страница 46: ...xlvi Precautions for Safe Use I O Module ...
Страница 47: ...xlvii Precautions for Safe Use AC Power Input Module ...
Страница 51: ...li How to Use the Manuals This page is intentionally left blank ...
Страница 61: ...10 1 Before Use ...
Страница 64: ...13 2 How to Use the System Equipment Rear view of A1 chassis Rear view of A2 chassis ...
Страница 93: ...42 2 How to Use the System Equipment ...
Страница 123: ...72 3 Connecting the System Equipment and Powering On ...
Страница 252: ...201 5 Server Blade Setup 7 Click Next The following screen appears 8 Click Add to SPAN The following screen appears ...
Страница 266: ...215 5 Server Blade Setup 12 Click Yes The following screen appears 13 Click Next The following screen appears ...
Страница 272: ...221 5 Server Blade Setup 3 Check Del and click Go The following screen appears 4 Click Yes ...
Страница 277: ...226 5 Server Blade Setup 3 Check Make Global HSP 4 Click Go Hotspare is set to the specified hard disk ...
Страница 332: ...281 5 Server Blade Setup 7 Click Next The following screen appears 8 Click Add to SPAN The following screen appears ...
Страница 345: ...294 5 Server Blade Setup 12 Click Next The following screen appears ...
Страница 351: ...300 5 Server Blade Setup 3 Check Delete and click Go The following screen appears 4 Click Yes ...
Страница 368: ...317 5 Server Blade Setup 5 Confirm that Controller BIOS is set to that value 6 Click Home to return to the main menu ...
Страница 426: ...375 5 Server Blade Setup 3 Check Delete and click Go The following screen appears 4 Click Yes ...
Страница 430: ...379 5 Server Blade Setup 3 Click Go Hotspare is set to the specified hard disk ...
Страница 473: ...422 5 Server Blade Setup iSCSI menu On the iSCSI menu you can check iSCSI settings Figure 5 42 iSCSI selection menu ...
Страница 479: ...428 5 Server Blade Setup ...
Страница 717: ...666 6 Management Module Settings Details of a physical partition ...
Страница 722: ...671 6 Management Module Settings Server blade details view ...
Страница 723: ...672 6 Management Module Settings ...
Страница 732: ...681 6 Management Module Settings Management module details view ...
Страница 745: ...694 6 Management Module Settings Optional Physical WWN list view ...
Страница 748: ...697 6 Management Module Settings Optional Physical WWN initialization view ...
Страница 750: ...699 6 Management Module Settings FRU list view Displays FRU information for all installed modules ...
Страница 751: ...700 6 Management Module Settings ...
Страница 752: ...701 6 Management Module Settings Sensor list view Displays sensor information for all installed modules ...
Страница 754: ...703 6 Management Module Settings Power status details view ...
Страница 767: ...716 6 Management Module Settings ...
Страница 768: ...717 6 Management Module Settings ...
Страница 769: ...718 6 Management Module Settings ...
Страница 814: ...763 6 Management Module Settings Power status trend view partition ...
Страница 817: ...766 6 Management Module Settings Access log display view ...
Страница 819: ...768 6 Management Module Settings WWN change log display view ...
Страница 879: ...828 7 Configuring the LAN Switch Module Link aggregation adding editing screen ...
Страница 899: ...848 8 Configuring the 10 Gb DCB Switch Module ...
Страница 919: ...868 10 Configuring the Fibre Channel Switch Module ...
Страница 931: ...880 11 I O Slot Expansion Unit Account setting You can use the console to set accounts For procedures see SO command ...
Страница 1097: ...1046 12 Logical partitioning manager Click Confirm and the OS setting is updated as shown in the following screen ...
Страница 1535: ...1484 12 Logical partitioning manager ...
Страница 1877: ...1826 14 14 When You Need Help ...
Страница 1925: ...16 Glossary ...
Страница 1926: ...Hitachi Compute Blade 2000 User s Guide ...