Tuning VMM Page with the vmtune Command

mdzubair940_at_yahoo.com
Date: 01/30/05 

Date: 29 Jan 2005 22:59:38 -0800

All,

Would appreciate if you can provide me some insight on the subject
mentioned.

On regular basis have come across the following error.

"Free Memory at 0 pages"

I am running AIX OS - 5.2, RS6000 IBM,7040-681.
After executing the following command found
[root@alpbsm]/# vmstat 1
System Configuration: lcpu=2 mem=8192MB
kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
4 4 3270178 35275 0 33 40 106 616 0 1602 15249 2893 37 7 38
19
3 0 3272533 32916 0 4 0 0 0 0 712 18556 1070 65 3 26 5
1 0 3272533 32913 0 3 0 0 0 0 458 3420 1007 49 2 47 2
2 0 3272533 32911 0 2 0 0 0 0 450 7816 1794 52 3 43 1
1 0 3272533 32911 0 0 0 0 0 0 460 2769 580 48 1 48 2
1 0 3272533 32911 0 0 0 0 0 0 448 2875 583 50 1 48 0
2 0 3272533 32908 0 3 0 0 0 0 490 3560 702 53 2 43 2
1 0 3272533 32908 0 0 0 0 0 0 450 2624 511 50 2 48 0
1 0 3272438 33003 0 0 0 0 0 0 442 2707 556 43 2 48 7
2 0 3272464 32969 0 7 0 0 0 0 771 9874 2653 54 6 31 8
0 0 3272372 33061 0 0 0 0 0 0 1584 4307 7947 47 8 34 11
3 0 3272340 33091 0 1 0 0 0 0 559 8726 1531 58 6 22 14
1 1 3272340 33089 0 2 2 0 0 0 744 2786 1088 81 12 0 7
1 0 3272342 33085 0 2 0 0 0 0 600 9540 1136 53 3 39 5
1 0 3272342 33084 0 1 0 0 0 0 511 23014 689 57 4 35 4
1 0 3272342 33080 0 4 0 0 0 0 512 3268 789 42 1 47 10
2 0 3272342 33080 0 0 0 0 0 0 473 2642 618 41 1 50 9
2 0 3272151 33268 0 2 0 0 0 0 528 5605 1532 34 3 46 17
1 0 3272342 33075 0 2 0 0 0 0 474 4588 1088 43 1 47 9
1 0 3272342 33071 0 3 0 0 0 0 581 8179 983 45 0 45 9

[root@alpbsm]/# /usr/samples/kernel/vmtune
memory_frames = 2097152
pinnable_frames = 1760982
maxfree = 816
minfree = 720
minperm% = 20
minperm = 393087
maxperm% = 80

How should I tune so that I can avoid getting the following error, What
precautions needs to be taken in.

"Free Memory at 0 pages"

[root@alpbsm]/# svmon -G
size inuse free pin virtual
memory 2097152 2045298 51854 335845 3247365
pg space 6619136 2419626

work pers clnt lpage
pin 335626 0 219 0
in use 1780109 254268 10921 0
Thanks in Advance!