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Regarding kernel parameter maxssiz...

 
srinu_1
Frequent Advisor

Regarding kernel parameter maxssiz...

Hi all,

We have one C class hp server.(Model:HP_9000/C8000).

I am getting the following error whenver start the database.We are using the Telelogic CM Synergy database.
Please find the message below....

Pid 18221 received a SIGSEGV for stack growth failure.
Possible causes: insufficient memory or swap space,
or stack size exceeded maxssiz.


This is causing the router process to abort. The problem has been encountered for the second time this week.


I checked the swap space.Sufficient swap space is available.


I need to increase the massiz parameter?.
Please give me your valuable Solutions ASAP.

Thanks & Regards,
Srinu.
4 REPLIES 4
Luk Vandenbussche
Honored Contributor

Re: Regarding kernel parameter maxssiz...

Hi,

Check 'swapinfo -mt' is you aren't running out of memory.
srinu_1
Frequent Advisor

Re: Regarding kernel parameter maxssiz...

Hi

I ran the swapinfo -mt command.Please find the output below...

ingbtc02#swapinfo -mt
Mb Mb Mb PCT START/ Mb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 4096 0 4096 0% 0 - 1 /dev/vg00/lvol2
localfs 3334 0 3334 0% none 0 1 /usr1/paging
localfs 3072 0 3072 0% 3072 0 1 /data3/paging
reserve - 6734 -6734
memory 10396 1781 8615 17%
total 20898 8515 12383 41% - 0 -
You have mail in /var/mail/root


Suffient swap space is available.
Josiah Henline
Valued Contributor

Re: Regarding kernel parameter maxssiz...

Run "kmtune -q maxssiz". This will give you its value.

You can also check SAM to get a numeric value if it returns a hex value. The value may need to be increased.
If at first you don't succeed, read the man page.
Michael Steele_2
Honored Contributor

Re: Regarding kernel parameter maxssiz...

Don't use SAM unless your all patched up.
Alternate way is the following:

cd /stand/build
/usr/lbin/sysadm/system_prep -s /stand/build/system (* this will build a copy of your kernel *)
vi /stand/build/system
change MAXSSIZ parameter
mk_kernel -s /stand/build/system
kmupdate
cp /stand/system /stand/system_old ( save kernel )
cp /stand/build/system /stand/system ( new kernel overwrites old )
shutdown -r now

note: do this off hours.
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