Cannot change hardware resource limit maxssiz on HPUX11.11

[Christina Wang]

Hi,

I'm trying to use kmtune to increase the hardware resource limit maxssiz and maxssiz_64bit. "kmtune" doesn't return any error messages. But after the machine is rebooted, the values for these two parameters are still the same as before. What did I miss? Any suggestions are appreciated!

Here are the steps I followed:

1)
# kmtune -q maxssiz_64bit -q maxssiz
Parameter Current Dyn Planned Module Version
===============================================================================
maxssiz_64bit 0x800000 - 0x00800000
maxssiz 0x800000 - 0x00800000

2)
# kmtune -s maxssiz_64bit=0x1000000 -s maxssiz=0x1000000

3)
reboot

4)
# kmtune -q maxssiz_64bit -q maxssiz
Parameter Current Dyn Planned Module Version
===============================================================================
maxssiz_64bit 0x800000 - 0x1000000
maxssiz 0x800000 - 0x1000000


Christina

[Don Morris_1]

maxssiz is a static tunable on 11.11, so you have to rebuild the kernel for the changes to take effect. SAM should do this for you, or you can use config(1M) or mk_kernel and then use kmupdate [if needed, but recommended since you should build to a temporary file] to move the resulting kernel into place.

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1046403
has a good sequence, I believe [look at the next to last entry].

[mavrick]

Hi,
The commands will change the values of
kernel paraemters.

kmtune -s maxssiz_64bit=0x1000000
kmtune -s maxssiz=0x1000000
Next reboot the values will change.

Otherwise try from SAM this will give more
user friendly way to rebuild the kernel.

[Christina Wang]

Hi,

Thank you for your replies. I followed the instructions in that link and it works for me now.

Christina