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November 22, 2005

AIX - LargePageの設定割り当て方法

テーマ： UNIXで頑張ってます(25)

カテゴリ：さーばやったこと

○ Large Pageの割り当て方法

1.SMITの起動
# smitty tuning

下記項目を指定
lgpg_regions=1664
lgpg_size=16777216

AIX5.3から動的反映される(AIX5.2まではリブート反映)

※ OSとして最低256MB使うのですべてをLarge pageに割り当てない事

※ Large pageを使いかは

or
環境変数:(LDR_CTRL_LARGE_PAGE_DATA=Y)の設定

================================================================================

1.現在の値を参照
# vmo -a | grep lgpg
lgpg_regions = 0
lgpg_size = 0
soft_min_lgpgs_vmpool = 0

2.パラメータを変更
# LANG=C
# smitty tuning

Tuning Kernel & Network Parameters

Move cursor to desired item and press Enter.

Save/Restore All Tuning Parameters
Tuning Scheduler & Memory Load Control Parameters
> Tuning Virtual Memory Manager, File System and Logical Volume Manager Params

Tuning NFS Option Parameters
Tuning IO Parameters
Tuning RAS Parameters

================================================================================
Tuning Virtual Memory Manager, File System and Logical Volume Manager Params

Move cursor to desired item and press Enter.

List All Characteristics of Current Parameters
> Change/Show Current Parameters
Change/Show Parameters for Next Boot
Save Current Parameters for Next Boot
Reset Current Parameters to Default Value
Reset Next Boot Parameters to Default Value

================================================================================
Change/Show Current VM Manager, File System and LV Manager Parameters

Type or select values in entry fields.
Press Enter AFTER making all desired changes.

[TOP] [Entry Fields]
cpu_scale_memp 8 +
defps [1] +#
force_relalias_lite [0] +#
framesets 2 +
htabscale n/a +
kernel_heap_psize 4096 +
large_page_heap_size 0 +
> lgpg_regions [1664] +#
> lgpg_size [16777216] +#
low_ps_handling [1] +#
lru_file_repage [1] +#
lru_poll_interval [10] +#
lrubucket [131072] +#
maxclient% [80] +#
maxfree [1088] +#
maxperm% [80] +#
maxpin% [80] +#
mbuf_heap_psize 4096 +
memory_affinity 1 +
memplace_data [2] +#
memplace_mapped_file [2] +#
[MORE...30]

F1=Help F2=Refresh F3=Cancel F4=List
Esc+5=Reset Esc+6=Command Esc+7=Edit Esc+8=Image
Esc+9=Shell Esc+0=Exit Enter=Do

================================================================================
COMMAND STATUS

Command: running stdout: no stderr: no

Before command completion, additional instructions may appear below.

================================================================================

COMMAND STATUS

Command: OK stdout: yes stderr: no

Before command completion, additional instructions may appear below.

Setting lgpg_size to 16777216
Setting lgpg_regions to 1664

================================================================================

# vmo -a | grep lgpg
lgpg_regions = 1664
lgpg_size = 16777216
soft_min_lgpgs_vmpool = 0
# svmon
size inuse free pin virtual
memory 8028160 7833932 194228 7312220 727745
pg space 1048576 2827

work pers clnt
pin 496476 0 0
in use 727745 0 290443

PageSize PoolSize inuse pgsp pin virtual
s 4 KB - 1018188 2827 496476 727745
L 16 MB 1664 0 0 1664 0
#

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