insufficient available memory


 
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# 1  
Old 08-08-2008
insufficient available memory

Hi,
when navigating on application webpages (peoplesoft applications) the users receive :
INSUFFICIENT AVAILABLE MEMORY.
I issued vmstat on UNIX server ( where is hosted Web server and application server and DB). Here is the result :
Code:
:vmstat 2 10

System configuration: lcpu=4 mem=30720MB 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
13  0 11161700 19374   0   0   0   0    0   0  40 1816 772 15  3 81  0  0.21  21.0
11  0 11161698 19361   0   0   0   0    0   0  26 1961 732  4  3 92  0  0.09   9.4
11  0 11161697 19359   0   1   0   0    0   0  27 90367 749 18 13 69  1  0.34  34.3
28  0 11161690 19340   0   0   0   0    0   0  49 26932 3297 28 10 62  0  0.42  41.7
25  0 11161688 19337   0   0   0   0    0   0  16 1615 688  4  3 93  0  0.08   8.3
14  0 11161934 19091   0   0   0   0    0   0  23 3133 885 25  3 72  0  0.31  30.8
 4  0 11161686 19328   0   0   0   0    0   0  63 11156 1990 82  6 11  0  0.94  93.7
21  0 11161724 19283   0   2   0   0    0   0 1635 10724 3953 17 12 70  0  0.35  35.0
 5  0 11161706 19292   0   0   0   0    0   0 1884 8950 4176 14 12 72  2  0.30  30.4
 9  0 11161669 19290   0   2   0   0    0   0 112 21947 1977 33 11 47  9  0.48  48.3

But I have the difficulty to see if realy there is a memory problem. Would you please be so kind to help ?
many thanks.
# 2  
Old 08-08-2008
How much memory does your unix server has? Can you paste output of free or top when you get this error ?

Peoplesoft is bulky application which really require good memory and processor.

- nilesh
# 3  
Old 08-08-2008
show swap space

4 CPUs and ~30Gb of physical memory installed?
What platform and what is the swap space utilization?
# 4  
Old 08-11-2008
thank you.
Platforme is AIX 5.3 TL7
How to knowe what the swap space utilization is ?
regards.
# 5  
Old 08-11-2008
thank you ynilesh.

Code:
:top
ksh: top:  not found
:free
ksh: free:  not found

I'm not logged in as root and I do not have the permission.
# 6  
Old 08-11-2008
There is an AIX subforum here btw.

From the vmstat your machine has a lot of CPU traffic, but no memory problem, it seems. Nothing in the pi column (so no paging in from paging space), but tons of runnable threads in the kthr (r) column, more than you have CPUs in your box.

For the memory error of the application you might have to check out in which way the error message is meant ie. follow error code description etc.

Since it is 4 real CPUs you might try to change it to 8 logical CPUs, if this is an DLPAR.

Paging Space info can be obtained by:
Code:
lsps -a

But as said, if there is traffic using it and slowing down your box, pi in vmstat would have some number >0.

Has the box been tuned before?

Maybe there are ulimits that don't grant enough memory.

You can check this in /etc/security/limits or by using "ulimit -a" as the specific application user on the box.

Last edited by zaxxon; 08-11-2008 at 09:39 AM..
# 7  
Old 08-11-2008
thank you.
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