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Operating Systems AIX AIX memory usage by processes Post 303025040 by dim on Tuesday 23rd of October 2018 10:10:48 AM
Old 10-23-2018
Quote:
Originally Posted by rbatte1
I regret that I am unable to hack into your servers and my crystal ball is in for servicing. Can you post some meaningful output illustrating why you think you have a problem?

It is usual for Unix/Linux servers of all flavours to keep their memory full, i.e. cached of anything they have used, just in case it can be re-used without having to wait for disk IO. Are you seeing paging space used? The output from lsps -a would show you this sort of thing. It is extreeeeemly unlikely that the two servers will have done exactly the same thing.

The output from vmstat 5 should also have a few columns about paging in & out counts.

If your server is not using paging space, then you don't generally have a memory problem. What is making you concerned?



Thanks, in advance,
Robin

Ok, first of all you have to get your crystal ball back! Smilie

Thanks for your insterest and your help in advance! as i wrote at the first post, i noted that my concerns are for that server A exceeds almost double memory for processes. If you could ask me which i should expect to use more memory is server B!

You may find below the outputs you asked..

Server A:
Code:
> lsps -a
Page Space      Physical Volume   Volume Group    Size %Used Active  Auto  Type Chksum
paging00        hdisk0            rootvg       10240MB     2   yes   yes    lv     0
hd6             hdisk0            rootvg       10240MB     2   yes   yes    lv     0

> vmstat 5
System configuration: lcpu=8 mem=4096MB ent=1,00

kthr    memory              page              faults              cpu
----- ----------- ------------------------ ------------ -----------------------
 r  b   avm   fre  re  pi  po  fr   sr  cy  in   sy  cs us sy id wa    pc    ec
 1  0 525275  5372   0   0   0   3    3   0  12 117936 242  2  2 96  0  0,06   6,4
 1  0 525275  5372   0   0   0   0    0   0  12 118346 235  2  2 96  0  0,06   6,3
 2  0 525275  5372   0   0   0   0    0   0  12 131497 243  2  2 96  0  0,07   6,8
 1  0 525275  5372   0   0   0   0    0   0  15 118115 239  2  2 96  0  0,07   6,8
 1  0 525279  5368   0   0   0   0    0   0  15 118376 245  2  2 96  0  0,06   6,3
 1  0 525279  5368   0   0   0   0    0   0  13 131583 239  2  2 96  0  0,07   6,8
 1  0 525279  5368   0   0   0   0    0   0  13 118366 242  2  2 96  0  0,06   6,5
 1  0 525280  5367   0   0   0   0    0   0  16 118352 241  2  2 96  0  0,07   6,7


Server B:
Code:
> lsps -a
Page Space      Physical Volume   Volume Group    Size %Used Active  Auto  Type Chksum
paging00        hdisk0            rootvg       10240MB     0   yes   yes    lv     0
hd6             hdisk0            rootvg       10240MB     0   yes   yes    lv     0

> vmstat 5
System configuration: lcpu=8 mem=4096MB ent=1,00

kthr    memory              page              faults              cpu
----- ----------- ------------------------ ------------ -----------------------
 r  b   avm   fre  re  pi  po  fr   sr  cy  in   sy  cs us sy id wa    pc    ec
 1  0 539268  7007   0   0   0   0    0   0  71 118825 318  2  2 96  0  0,07   7,3
 1  0 539269  7005   0   0   0   0    0   0  52 131764 290  2  2 95  0  0,08   7,6
 1  0 539269  7005   0   0   0   0    0   0  44 118343 277  2  2 96  0  0,07   7,0
 1  0 539269  7004   0   0   0   0    0   0  43 118585 280  2  2 96  0  0,07   6,9
 1  0 539269  7004   0   0   0   0    0   0  42 131689 283  2  2 95  0  0,07   7,4
 2  0 539269  7003   0   0   0   0    0   0  55 118711 304  2  2 96  0  0,07   7,3
 1  0 539269  7003   0   0   0   0    0   0  68 118550 310  2  2 96  0  0,07   7,2
 1  0 539269  7002   0   0   0   0    0   0  41 131688 269  2  2 95  0  0,07   7,2



If you need anything more as info, please guide me!
Moderator's Comments:
Mod Comment Please use CODE tags (as required by forum rules) whenever you post sample input, output ,or code segments.

Last edited by Don Cragun; 10-24-2018 at 12:25 PM.. Reason: Add missing CODE tags.
 

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