insufficient memory o swap space

[Kassler]

Hi all!

I have a problem ...
i received following massage after a crash
of a simulation...

Pid 455 received a SIGSEGV for stack growth failure.
Possible causes: insufficient memory o swap space,
or stack size exceeded maxssiz.
Illegal instruction(coredump)

I have a L3000 with 8GB Ram and 4 CPUs
my system parameters are

STRMSGSZ 65535
dump lvol
maxswapchunks 7756
nkthread 2048
max_thread_proc 256
ncallout (16+NPROC)
shmmni 200
shmseg 120
semmns 200
nfile (4*(16*(NPROC+16+MAXUSERS)/10+32+2*NPTY))
ninode 25000
nproc (276+(32*MAXUSERS)+128)
maxdsiz 0x7b03a000
maxdsiz_64bit 0x120000000
maxuprc 128
bufpages 0
hpux_aes_override 1
maxusers 128
npty 512
nstrpty 512
create_fastlinks 1
dbc_max_pct 25
eqmemsize 400

Can anybody give me an explanation of the
parameters?? And which should i change!

Thanks!!

Markus

[Alexander M. Ermes]

Hi there.
Here just the short way :
Open SAM and go to Kernel configuration / configurable kernel parameters.
You will be shown the kernel parameters with a short explanation as last column. If you do not see the column Description, open menu VIEW and actgivate this column.
Rgds
Alexander M. Ermes

[Bill McNAMARA_1]

The following link will explain how to determine your maxssize requirements.

Later,
Bill
http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x2d97ee3e323bd5118fef0090279cd0f9,00.html

[eran maor]

Hi

i can see that you have the links to the des. of the params.

i check the value of your params and one of them looks that is not config well to a computer that is running oracle .

the param : dbc_max_pct
i m recommend to change it to value 10

Description
When the parameters bufpages and nbuf are both set to their default value of 0, the size of the buffer cache grows or shrinks dynamically, depending on competing requests for system memory.

The value of dbc_max_pct sets the maximum percentage of physical memory that can be allocated to the dynamic buffer cache.

It is possible to set both dbc_max_pct and dbc_min_pct to the same value, 12 for example, and create a kernel that uses exactly that percentage of physical memory for the buffer cache, regardless of the size of physical memory


it is recommand by oracle to put value no more the 10 % of the memory .

i think that it will help your applic .